From a night life perspective most Colorado ski towns kick all sorts of ass over Utah.
Also, I wouldn't discount Whistler, it's pretty rare that they get rain, an even if they do it's the lower mountain. You have to remember how larger the Whistler/Blackcomb combo is. You visit several different climate zones from the bottom to the top. Consistently ranks #1 in every ski and snowboard magazine out there. There is something going on.
For Colorado, I'd recommend doing Crested Butte, Telluride, or Aspen. They are more destination areas and have great terrain. Aspen being one of the more entertaining ski towns around. Even though it's populated by the mega rich, I've met some of the most friendly locals around in Aspen. Crested Butte is just a balls to the wall gnarly mountain. T-Ride, well it's remote. I haven't been there yet but it's in the San Juans and that is an impressive range.
Breck and the surrounding resorts are also fun, especially if you get the snow.
The backcountry around here is pretty limitless too.