Well, being a huge Rick Nash fan, you won't get any argument from me, but he really needs to step up, and take that title. He is more than capable. Just needs to get it done. As far as the best in the NHL goes right now, I don't think there really is a strandout guy, but there are many at, or around the best category. Here are a few off the top of my head, but none seem to jump out at me as the clear leader.
Joe Thornton
Mikka Kiprusoff
Dany Heatley
Ilya Kovalchuk
Sidney Crosby (potentially)
Alexander Ovechkin (potentially)
Jaromir Jagr
Ryan Miller (potentially)
Dion Phaneuf (potentially)