I'm debating with HP or MP or MPP. I'm 34A. 12.5 BWD. Thinking of 360CC HP but thinking it might look too fake? (Photo)

hello thank you for your question and provided information as well.. based in your pictures and in the case , you are a good candidate for breast augmentation  with implant high profile, in you case its recommended get a consultation with a plastic surgeon to check how many cc do you need to get very well results.

Many factors affect the appearance of augmented breasts and the profile of the implant is just one of them. To truly make an accurate recommendation requires a physical examination and a thorough discussion of your goals. Your best resource for this is your surgeon. Spend the time necessary with your surgeon and allow him or her to carefully guide you through this process. 

Hello,
Almost everything you said in your post is incorrect. I'm sorry. 1. 'Natural' and 'Full' are the antithesis of each other; i.e. you can't have both, at least with implants alone. Most women end up happier with 'full' over 'natural', but that doesn't mean we should ignore those that really want a 'natural' appearing breast.  2.Height and weight are meaningless to proper implant sizing, which is based on a combination of determining anatomic capacity and a goal appearance in a mirror using sizers. The volume determined by sizing should never exceed your anatomic capacity as determined by biodimensional analysis. 3. Bra cup size should never be mentioned in breast augmentation planning; it is a meaningless, non-standardized designation to a garment that fits everyone differently based on subjective feelings. 4. BWD is being mentioned by everyone these days, but falls far short of true bio-dimensional analysis, and isn't even the most important of the five measurements. Unfortunately, many of my colleagues still think that if the implant diameter is the same or less than the BWD, than all will be good; it frequently isn't, so don't be fooled by the guy who wants to put that HP implant into you. 5. HP implants have the highest complication and reoperation rate of all implants. Go visit a few ABPS certified/ASAPS member surgeons who specialize in breast surgery and have at least a decade or two of experience. Some of us can offer you with confidence alternatives like hybrid augmentation (implant and fat grafting), shaped devices, and even yet-to-be-approved implants. Best of luck!

The implant selection should be based on a combination of your desired size, soft tissue dynamics, breast base diameter and skin elasticity.  I recommend an in-office examination as well as a detailed discussion with a surgeon who you are comfortable with.   Finally, make sure your surgeon is a Double-Board Certified Plastic Surgeon certified by the American Board of Plastic Surgery (ABPS), a member of the American Society of Plastic Surgery (ASPS), a member of the American Society of Aesthetic Plastic Surgery (ASAPS), and a fellow of the American College of Surgeons (FACS).Best,Dr. DesaiBeverly Hills Institute for Aesthetic Plastic SurgeryHarvard Educated, Beverly Hills & Miami Beach TrainedDouble Board-Certified, Double Fellowship-Trained Beverly Hills Plastic Surgeon

Looking at your wish picture I think you would get the best results and what you want with the HP implant. 

Thank you for your question. You have a nice starting place, so I would expect  that you will have beautiful results with a carefully performed surgery. I think that the choice of profile most significantly affects "naturalness"of your results. High profile implants tend to give a more augmented look, while moderate profile may give a more "in between" look. Speak with your surgeon about your goals, so that they can advise you. I personally prefer moderate, or moderate-plus profile implants.

Hello and thank you for your question. You are a great candidate
for a breast augmentation.  The size, profile, and shape of the
implant is based on your desired breast size/shape, your chest wall
measurements, and soft tissue quality.  This decision should
be based on a detailed discussion with equal input from both you
and your surgeon.  This entire surgery
can be performed with a small incision technique.  Make sure you
specifically look at before and after pictures of real patients who have
had this surgery performed by your surgeon and evaluate their results.   The most important aspect is to find a
surgeon you are comfortable with. I recommend that you seek consultation with a
qualified board-certified plastic surgeon who can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D. FACS
Harvard-trained plastic surgeon

Dear nikaburke,Breast implant type and sizing selection is a complicated process and requires a detailed consultation that includes a discussion of your goals, a detailed examination, and a lengthy discussion. But the decision will always start and end with the patient. When it comes to sizing, we have all of our patients find 3 photos of their desired breast size. We ask for naked breast photos because clothing can obscure the true size (push up bras). Next, we consult with patients and go over the photos and take detailed breast measurements during a physical exam. Next, we using a sizing algorithm to determine a range of implants that will work based on the exam and the measurements.Lastly, during the operation, we use silicone sizers in the operating room to see how the size actually looks in the breast. We sit the patient up in the operating room, while asleep of course, and compare the sizer result with their desired look photos. If it is too small, we start the process over with a slightly larger implant. We don't stop until we get the perfect match.Of all of my breast augmentation patients, every one of them has been happy with their size due to this detailed and meticulous process. You don't want to invest time and money into a result that is either too big or too small.You should discuss your concerns with a board-certified plastic surgeon and make sure that your surgeon understands your goals.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Profile terminology will vary from one manufacturer to the next. The terminology matters less than the correlate dimensional measures.
As one goes up in profile the footprint or BWD of the device will shrink and the projection will increase for a given volume. I have found that full profile Allergan implants correlate closely with high profile Mentor implants. These devices exhibit higher projection than similarly sized moderate (+)/moderate profile devices. Ultra high profile is simply the next step upwards in projection.
Patients are encouraged to stay within the boundaries defined by their BWD. This is the best way to avoid the dreaded "fake" look. I generally recommend that patients with smaller frames who are seeking more than a modest augmentation consider a higher profile device.The higher profile device will impart greater projection and thus a less subtle result but will allow for a more significant augmentation than a similarly sized Mod/Mod+. Thus, the ultimate question is one of volume. Is the volume you can achieve via a similarly sized Mod + profile implant adequate to reach your desired goals? If not, a HP will afford you more volume at the cost of subtlety.
The difference between higher and lower profiles for a given volume is projection and for a given width is volume (with the high profile implant being greater in both scenarios). The moderate plus is the most commonly used profile in my practice. It allows for the most reasonable volume in given BWD. In my practice, low profile implants are the least commonly used (widest and flattest). I will typically reserve high profile devices for smaller framed individuals or those seeking a less subtle more dramatic change (the opposite of natural). 
Smaller framed patients tend to prefer HP implants as their BWD can be restrictive with regards to volume. An HP implant will provide greater volume in the same BWD footprint. But remember "natural" while difficult to define often implies a good match between frame, volume and projection. If the goal is natural more conservative sizing/volumes are recommended.
In general, the difference between a high and Mod (+), in reality, is very small (on the order of millimeters).  In my practice, I generally classify profile based upon patient preference. A higher profile provides a more dramatic look (size for size) vs. a moderate + profile which is relatively more subtle and understated. That being said the vast majority of patients will select a moderate + profile device.
With regards to your specific question, love the look not the cup size. It is important for patients to abandon all preconceived notions of cup size as this will vary from one manufacturer to the next. I try to get patients to commit to a particular profile first. This will determine whether they are seeking a more dramatic (HP) or understated (Mod +) result. Once we have narrowed down to a particular profile, we can look at options within that profile that are compatible with a particular patient's breast width/anatomy. 
As always, discuss your concerns with a board certified plastic surgeon (ABPS)

Placing the implants behind the chest muscle helps to make any size and profile look more natural and less fake. I recommend an in person consultation with a plastic surgeon to discuss your goals and be measured. After I do this with my patients, we then look at pictures of women with similar measurements with different size breast implants. My patients tell me that this process is very helpful in determining what size breast implant is right for them. 
Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author