Aspen is the nightlife spot for ski areas in the US. Only Whistler has a bigger scene. Breck is a backwater dump in comparison. In fact it doesn't compare to what Aspen has. Of course Aspen comes at a premium. If you are looking at it from that angle, Breck is going to cost you less.
The riding terrain at Aspen kicks all sorts of @$$ over Breck too. Breck is such a flat boring hill. The three biggies (Ajax, Snowmass, Highlands)at Aspen have better terrain than almost all of Summit County.