I'm not a fan of GSP, but I repsect the holy hell out of him. I prefer a more agressive style, and so I prefer guys like Condit.
Despite some of the crap Condit got for the Diaz fight, I firmly believe he has the ability to beat GSP. GSP is the champion, the gold Condit is carrying is bascially a golden ticket to a title fight and nothing more.
As eluded to earlier, don't let the Diaz fight fool you. I believe we tend to see the worst of a fighter when he is in a bonified number one contenders fight. Those are not easy to secure and guys tend to play it safe for the win. We saw it with Josh Koscheck against Daley, Evans vs. Davis, even Sonnen vs Bisping, you could even argue Clay Guida just tried it against Gray, Diaz and Condit was no different. We'll see the mean Carlos return against GSP, and I believe we'll see his downfall.