I would research research. I was all ready , I thought, just because I hadn't done equal reading on both the band and RYN. I went to a place close than, at the time only did RYN and of course it sounded like the thing for me. It wasn't until I talked to my family dr. and he said I really needed to look at the band. Oh my gosh, I am so glad that is what I did. Now, I haven't had mine that long to know if I am going to be able to use this tool I now have but I know that since the surgery I am so glad I didn't go with the RYN. Not that it isn't right for many. The issues that go with RYN are something I didn't want to deal with. So talk to places that do both, read read read read.
Lots of info out there. HOpe this helps . Feel free to ask more????