I think it is great you are doing research on which method is best for you. However, both are just tools to losing weight. It would be nice if there was a total cure but the surgery doesn't FIX our mind and thoughts and habits. Regardless of which procedure we pick, it will involve a total life style change. Yes, they will help a lot in losing the weight but keeping it off is mostly up to us. WE have to learn to eat right. WE have to find an exercise plan that is fun and keep us active. WE have to find out what our triggers are and get some help identifying them, and replacing them with good habits.
So, while you are deciding on which procedure is best, also get your support system in place. Doctor, family, support group. If you need to, a nutritionist, and a counselor who specializes in eating addictions and disorders.
As for me, I would do the MGB again in a heart beat. It was the best choice I ever made and I am on my 13 year out.