Thank you for your questions - this is a great topic, of which, many people have a misunderstanding. First of all, I can tell you that with a BMI of 25 and the fact that you are having 4 areas treated, there is NO WAY anyone could get 5 liters of fat off of you without making it look like you had "bad lipo." Without photos and without knowing exactly which areas you are considering, I cannot really say much more about expectations with respect to volume of fat removed, but I NEVER get 5 liters off of someone with your build. Whoever told you they would take it "all" is simply incorrect or over-simplifying things. You should never want "all" your fat removed; it would look terrible. Remember, liposuction is not about losing weight at all. It's about changing the shape and contour of your body. If a patient is obese going into liposuction, then she'll be obese coming out. In most of the US, the state medical boards have a regulation limiting the maximum amount of fat that can be removed in an outpatient setting; and in most states, that number is 5 liters. I tell 100% of my patients, "liposuction does NOT equal weight loss." If someone your size were going to do her full abdomen (2 areas), waist, and flanks, I would anticipate removing 1-2, maybe 2.5 liters of fat total, on average. Each liter of fat equals about 2 lbs; so, at best, that is a 5 lb weight reduction. AND, she would get a great, natural-looking result, getting back all her curves in the right places, but not looking like she was butchered with bad-lipo or "over-done." My goal as a cosmetic surgeon is to achieve a natural-looking result.As for anesthetic choice, I am of the opinion that less is more. Liposuction, Vaser included, can be done awake with minimal oral sedation and that would always be my first choice for many reasons. Some procedures, require more anesthesia, such as liposuction with combined fat grafting for a Brazilian Butt Lift, for example. "Hi Def" Vaser liposuction will also generally require more than just "minimal" sedation. Also, some people are better off being more knocked out, particularly those who may be overly anxious being awake in a surgical setting. I offer my patients the choice of any of the above. Deep IV sedation or general anesthesia will cost more, because it requires a dedicated anesthesia provider, but for many patients, it is well worth the added cost for their peace of mind at knowing they will not have to be aware of everything that is going around them in the O.R.Advantages and disadvantages of general vs awake anesthesia:General: Pros: You are totally out. No pain at all. No worries. Doctor can be as aggressive as needed to remove fat without worrying about possibly causing pain. Cons: No chance for patient feedback to surgeon during surgery. Added expense.Minimal Sedation: Pros: Can communicate with surgeon during procedure - safety feature in that if the liposuction cannula goes anywhere it's not supposed to, patient will let the surgeon know immediately (ouch!). Less expensive. Fewer side effects from anesthetic medications. Cons: Difficult (impossible?) to predict how it will affect you. Some people are "out cold," while others are wide awake and chatting the whole time and everything in between. Not a good option for very anxious patients.Good luck and I hope this was helpful!