I know you said other ASPEN moutnains, but Snowmass is close enough... only a short bus ride.  I'd have to say Snowmass Mt. only because I'm an all mountain skier.  It has powdery, steep steeps to groomed catwalks.  This year, they are putting in a bigger terrain park!  In other words, it has the best varioty (i think that's how you spell it).
__________________________________________________
'Don't worry, if you fall off the lift, I'll jump down and catch you!'