I don't know anything about the RNY, so can't help you there. Band is a complete waste of time (and messes up your life in the bargain). VSG works for some, but your best result is probably 60% of excess weight. ....and a high chance of it coming back. DS, the typical result is 90% loss of excess weight, and it stays off. My surgeon said he's never had a SIPs patient lose less than 100 lbs, and his practice is huge (there were forty people in my pre-op class. There are 3 surgeons doing 5-8 procedures a day, 4 days a week)
If you're single and looking to mingle, I'd think losing the weight would be job #1. As pretty much everyone on this board is saying, you can manage the gas; It just takes discipline. And lets be clear, even when things are bad, it's not like I'm spontaneous exploding. It's not incontinence, where things are just shooting out when I least expect it. I'm still 100% in control.
If you are dating and motivated to impress some hot stud (or Studette), you will be able to manage this...at least until you have your hooks in 'em. Just stay the hell away from the bread basket!