I can see him being top 20 and maybe even getting into my top 15. He needs to sustain his current level though. The fact that he couldn't put together an entertaining run as a babyface hurts his chances of ever getting beyond 15 for me.
Top 10 performers need great face and heel runs on my list.
Never liked Angle that much. Maybe I'm bias but Punk and Austin is what I believed saved the WWE. If the Attitude era never happened we would have never seen all those Austin and Vince rivals, or hear Punks break out speech he gave on Raw last year. And who wouldn't want to see a Punk vs Austin WM match.