I don't know why they keep suggesting gastric. I know the support group I go to, we have had a few people that had gastric and now is having lap-band.
When I first started this journey years ago, I thought of gastric, but when I went I felt it was like a meat market. I was not yet a hundred pounds overweight, but they would tell you how to add pounds on by using weights. I was not comfortable with all the side effects and the high risks. I left there and never went back.
Five years later, I had lap-band and I am so happy with it. I had a few problems, but I believe its myself causing them. I only have to loose one hundred pounds and now I'm only six pounds away. Go with your gutt feeling. Good Luck