Will there be a noticable difference between 250cc/275cc moderate plus implants or if I choose 270cc/295cc moderate plus xtra?

Between these two profiles, the Moderate Plus Xtra in those volumes adds just a little more upper pole fullness long term vs the regular Moderate Plus.  The Xtra help maintain a fuller sloped appearance in the upper pole over time whereas the Moderate Plus can settle slightly more and lose a little of the desired look.  I generally favor the Moderate Plus Xtra these days since they feel equally as soft but still maintain better shape.  I hope this helps.

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 a 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). 
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 (especially those seeking a more natural and subtle result).
I often find it is easier to decide on a profile (rather than a volume), this combined with BWD will determine volume. Trying to match a particular volume to a profile may lead a BWD mismatch. In my practice, smaller framed individuals do prefer higher profile devices. Ultimately, profile choice is a choice between more or less subtlety.
I would recommend more communication with your surgeon. It is his/her job to guide you through this process. Their experience is a resource...use the resource.
As always, discuss your concerns with a board certified plastic surgeon (ABPS).
Donovan Rosas MD
Board Certified by the American Board of Plastic Surgery
Member: American Society for Aesthetic Plastic Surgery, American Society of Plastic Surgeons
RealSelf Verified Member
RealSelf Top 100
RealSelf Hall of Fame

Thanks for your inquiry, the Mod Plus Xtra you describe feels firmer and has more upper pole volume characteristics then the regular moderate plus, hope that helps and best of luck. 

Hello and thank you for your question. You should discuss this in details with your plastic surgeon. The difference in projection between these implants is likely minimal. Xtra gel implants will likely have less implant visibility or rippling effect. I would seek consultation with a board-certified plastic surgeon
for a full evaluation and advice. Best,
Pejman Aflaki, M.D.                                            
Johns
Hopkins-trained double board-certified plastic surgeon

The difference in your choices are negligible. 250 to 295cc (45ccs) is equivalent to about 3 tablespoons. There is not much difference between the two implants. Enhancement, unfortunately, is not an exact science, and is mostly about improvement. After I measure and discuss goals with my patients, we then look at pictures of women (my patients) with similar measurements with different size and style breast implants. Women tell me that this process is very helpful in determining what size and style breast implant is right for them. 
Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author                           
RealSelf Distinguished Hall of Fame Inductee
 

Hello and thank you for your question.  The best advice you can receive is from an in-person consultation.  These implants are very close in size.  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.   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. 

Best wishes and good luck.


Richard G. Reish, M.D.  FACS

Harvard-trained plastic surgeon
 

Depending on your build both of those implant selections are pretty small and not likely to give upper fullness. The difference between them is minimal. You might want to consider slightly k look after implants like around 325.

Dear fafa84,
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

Hi, thank you for sharing your question. The difference in these implant sizes is likely negligible. During your procedure, your plastic surgeon will try various sizers to identify the optimal size and shape for you to match your goals. I hope this helps. Best of luck! 

I appreciate your concern, and size and implant projection are important. I try to tailor each breast augmentation operation to my patient's desires and body type.I ask my patients to bring in photos of breasts the size they desire, because there can otherwise be confusion because B or C cup can vary greatly by brassiere manufactures! I also utilize the implant in the bra technique, with several different implant sizes with a tighter fitting T-shirt to get an idea of what you will look like. Be sure to consult with a board certified plastic surgeon and go to your consult with all your questions written down so you don't forget to ask something.