You should check out this site:
I can't say there is a lot of info for long term effects. Since the RNY and LAP Band haven't been done as long as 25 years, there are no patients to follow. I know weight loss surgeries have been done for many, many years, but they were all more extreme.
The above site should provide you with more middle of the road opinions.
I guess one has to think too, what will be the effects of your weight in 25 yrs? I don't know the answers, I am struggling with the decision day to day.