ALL wls's have their negatives. But on the two you are researching...
Go to http://www.lapbandtalk.com
and find the "Complications Board" and the "Life After Band Removal Board."
And, for me losing weight "at a slower pace" would have been fine. What was NOT okay was having a screwed up esophagus, not being able to eat anything like a normal diet, and regaining the weight I did lose.
I just today ran across my notes from my band-days. Seven months post-op, I had gone from a BMI of about 48 or 49 to a BMI of 39...and that's about as good as it got. For the next two years, I regained all that weight as I was able to eat less and less solid food.
I am now seven months out from the DS surgery. I STILL have horrid eating habits. But in THESE seven months, my BMI has gone from 48 or 49 to a BMI of about 34 and NOW I am slowly losing weight.
Age is also another issue. I'm almost 60...I don't know if I'd opt for DS if I were very young and still hadn't started a family...HOWEVER, the DS doesn't seem to be keep the DS Board people here from getting pregnant!
Be honest with yourself. Are you a sweets junkie? Do you "graze," every evening, eating all the time? The band may not be as much help as you need.
Learn about all of surgeries and then FORGET what your family wants...they are not going to have to live your life if you pick the wrong surgery.