Since HBK (for the purposes of this thread) is taken to have been part of the Attitude Era, I'm going to say that he is the best right now. Shawn Michaels is perhaps the most consistant main eventer they have and it seems that WWE can always rely on him to put on a great match.
I think Michaels has all aspects of the game covered, i.e. selling, performing, showmanship etc and I prefer him over HHH, Taker and certainly Jericho (whom I've never been a huge fan of anyway). The quality of Michael's work is really impressive in my opinion, especially considering he is in the twilight of his career and I believe he can out perform HHH, Jericho and yes even the Undertaker...
I think Michaels has all aspects of the game covered, i.e. selling, performing, showmanship etc and I prefer him over HHH, Taker and certainly Jericho (whom I've never been a huge fan of anyway). The quality of Michael's work is really impressive in my opinion, especially considering he is in the twilight of his career and I believe he can out perform HHH, Jericho and yes even the Undertaker...