When everyone is healthy:
Curry
Westbrook
CP3
Irving
Lowry
Wall
Lillard
and then, Reggie Jackson, IT, Brandon Knight and Bledsoe all bunched up right now. I expect those in that group to separate themselves over the next few years (and believe Jackson has the most potential as he is a 20/6/4 player in just his first season as a starter at 25 y/o).
Kemba, Conley, Teague, Parker, Rondo all in the next couple of tiers.