Question for you VSG'ers
Most VSG'ers I see getting revision (not huge numbers, by the way) are due to insufficient weight loss.
First, let me say I love my sleeve and believe it was the right decision for me. But it's NOT the right decision for everyone.
VSG is not an ideal surgery for those with huge amounts to lose (say BMI well over 50). There are a couple of people with really high BMI numbers who have done well on VSG (guy over there has lost 330 lbs, several others over 200) but it's not the norm.
It's also not the best surgery for those who have a metabolic problem that would interfere with weight loss. Can you lose now on a properly followed 1200 calorie or so diet? Someone who eats those calories and can't lose may have a metabolic problem. I have a slow metabolism due to being post-menopausal, but I can lose on 1200 calories so I knew I'd be OK on this regard.
Please read carefully the revision rates for RNY, which are higher than for the sleeve. This is because you lose the malabsorption of calories to an extent as your body adapts AND can develop reactive hypoglycemia which leads to weight gain. It doesn't happen to everyone, but it's not uncommon either.
My advice: hold onto your pyloric valve. This means either a VSG or a DS (duodenal switch - not a huge number of surgeons do this one). If you have a BMI below 50 and no metabolic problems, I'd go with the sleeve. But if you really think you need malabsorption, I'd seriously investigate a DS even if it means changing surgeons.
I don't regret having a sleeve rather than a DS, but I'd have a DS before I'd ever consider an RNY.
Highest weight: 335 lbs, BMI 50.9
Pre-op weight: 319 lbs, BMI 48.5
Current range: 140-144, BMI 21.3 - 22
175+ lbs lost, maintaining since February 2012