CM Punk
Dolph Ziggler
Daniel Bryan
...would be my first three, all have the necessary ring and mic skills to keep it interesting.
Can we class Rock as current?!
Purely for drawing power...
Wildcards would be Tyson Kidd, for a solid worker, Christian for experience, or maybe even Santino!
I don't watch enough TNA anymore to pick anyone from down there.
So, I don't really have 5 definites, but you've got 6 anyway, so it's OK...