I'm picking Jericho at the moment. Haven't liked the guy since his whiny crybaby cruiser role in WCW, and could never see him being a threat. Thought when he was in there with the likes of Cena and Batista that it was a joke for them to sell him as a threat. When he came back it was more of the same. But now I buy the dude. If you put him up against Cena this time around I could actually buy him having a chance against him. I'm loving that for the first time in years he's showing that he has range as a character and he's finally playing a heel this time around. It'll be much better this time around when they eventually put him up against Cena, as he won't be trying to still the cheers away like every "heel" was doing around the time up until Edge got to him.
Edge is great though... it certainly takes a lot of talent to be bigger and more important than the actual show you're on... and no one has had that ability to do that since Austin and Rock. Cena at times can come off like this but it's usually killed off by some lame written promos, and Batista doesn't have enough range to make up for his killer presence to be like this.