so I take it you're going to single front ring? I don't think your frame has ISCG tabs does it? I think most guides will come with bb adapter so you've got alot of options. I happen to have a new gravity light guide with a bb adapter I'm not going to use after all if you're interested just pm me.
I was just looking at the bionicon and that's probably what I will go with since I really don't want to go down to one ring. I still want the bike to climb and I'm a weak climber so I'll need the extra help from the granny gears.
I second the bionicon c.guide. It actually works pretty damn well, adds minimal/negligible weight. Minimized my chain slap issue, and I've never really had problems with dropped chains.