I was under the FDA study, and have been through it all. Revised Sept of 2004 and it gave me a new lease on life. At 5'1, I weighed 221, and now around 155.
Frankly, I can lose another few pounds, and I'm going for another fill this week, but I won't let it get me down.
If you're in the NYC area, I can meet you to talk about the surgery (If you're nervous about it) or how you feel post-op.