I've been to the following:
CO
Winter Park, Steamboat, Breckenridge, Vail
UT
Deer Valley, Park City, The Canyons, Alta, Soltitude
Favorite by far is Park City. Transit gets you to PC, DV and TC. Second choice would be Vail ($$$$$).
Not much on the nightlife personally. Ski my a$$ off during the day, good meal and some beers at the condo at night. Plenty of zzzzz's. Do it over again.