Hey there!
You're asking about advice for surgery in Mexico, and everyone on here who's gone will try to push you on their surgeon (myself included) because, let's face it, we all think our surgeon was the best. So what I'm going to do instead is give you advice from a completely objective point of view, without dropping the names of surgeons if I can help it.
What helped me the most in researching the VSG in Mexico was calling the surgical groups that I was considering directly. Sure, the opinions of others can make you feel more comfortable about surgery abroad, but once you talk to the right coordinator about the right surgeon you'll just know....it's hard to explain. I will say though, don't choose anyone until you're 100% comfortable with making the decision, and accepting any of the risks and complications that can come along with the surgery. It's a huge decision, and you don't want to pick the person who will operate on you just based upon price or what you've heard from other individuals.
I will give you a list of questions that I asked myself and the coordinators before making my choice, in the hopes that it'll help you out.
How many surgeries has the physician performed?
What is his complication rate?
If something goes wrong during surgery, will I have to pay additional money to correct it?
How many nights will I need to be in the hospital, and what happens once I'm discharged?
What does the surgeon charge, and what all does this fee include?
Is the hospital (or surgical suite) located in a safe area of town?
Am I allowed to bring a companion?
How long has the surgeon been performing the VSG?
Do I feel comfortable putting my life in to the hands of this person, whom I've never met? (for me, this was the deciding question on which surgeon I chose.)
Would I be comfortable with someone I love telling me that this was the surgeon they've chosen (alot of times I don't consider the fact that my decisions effect others, so this one was helpful as well)
For me, the decision boiled down to what I found to be the most important factors when getting the surgery, which were how many times has the surgeon performed the procedure, how many leaks he had, and the fact that he had a zero fatality rate. I know that your list of priorities may vary greatly from mine, but I hope this will at least give you some questions to think about.
Try not to sweat it too much, and please (even though we all are well meaning and have your best interest at heart) take our words worth a grain of salt. The decision that you make will be the right one for you. There's no wrong answer, just the surgeon that's going to be the best fit for what you're looking for! If you have questions or want someone to talk to, feel free to shoot me a PM, I'd be more than happy to provide you with stats on all three surgeons.