I'd say GU (merely because i have one) I was stuck with the same decision as you, but i chose the GU. But i suppose it comes down to personal preference really. Dan.
Mine did the same on my Drone. I think all DMR BB's are shit. I got a trialtech BB on my GU Jack, don't know a hell of a lot about them though. But ive heard the FSA ones are good. Dan x
Could'nt have put it better I find when i ride with others they can give you tips on how to do things. And its good being around people that share the same interest as you