Hi,
As someone who has had a gastric balloon sleeve and finally rny, I would definitely reccomend the sleeve procedure. Even after 6 years, my doctor told me there has not been much deformity and that my pouch hasn't enlarged that much (and I must say that I got pregnant and kind of lost control over everything)
You do feel full, you do eat MUCH less than you normally do, in your case I don't suppose the feeling is any different than having a lap band. The best way is probably to consult your doctor (given that the operation may not be suitable for your age.)
Wish you the best!