Hi,
I guess you have to consult a surgeon first to know which one you're qualified to have.
Again, I'll post this comparison between lap band surgery and gastric bypass:
(Is this ok or I'll just have to put the link of my same post?tnx) Gastric Bypass
-time tested
-complex operation, it involves multiple areas of the abdomen
-Rapid weight loss over 3-6 months, settling at final weight 10-16 months after surgery
-Mineral absorption deficiency, requires long-term supplements
-Dumping syndrome (intolerance to sugars and some carbohydrates)
-Not reversible
-No significant hardware in body
Lap band
-a new technology
-Simpler operation, gives lower risk around surgery (less chance of death or prolonged hospitalization)
-Slow and steady weight loss, settling at final weight around 2 years after surgery
-Possible deficiencies due to decreased intake, long-term supplements also recommended
-No Dumping syndrome
-Sort of reversible
-Long term (non-reactive) plastic material in body
-lap band must be adjusted for best success
Hope that helps. Good luck!