That thread that Sibhusky posted has a ton of great info but is really massive, and maybe tough to get through....
I did a bunch of research a few months ago as an intermediate looking to take my first trip out west to ski for 3 days (though with a few friends, also intermediate, mostly groomer, skiers). A few notes from my experience planning :
-- We settled on Vail, but night life was a concern for some of our group, and wanted the "upscale village/party" experience. Plus Denver flights were really, really cheap when we booked; Less than $300.
-- Personally, I was pushing for Big Sky in Montana. Huge, interesting variety, lots of intermediate terrain, more affordable, could potentially take an extra day to visit Yellowstone, not much of a village/nightlife
-- Jackson Hole doesn't seem to be a great intermediate mountain - plenty of trails, but the focus seems more on the more difficult stuff (check out the Unofficial Guide on here for lots of detail).
-- Telluride seemed great - neat town, location, but a bit longer and more expensive to get to
-- Breckenridge - Simply over-ridden by Vail being nearby on the opinion of a few folks who have been out there
-- Whistler-Blackcomb - Just too far, and unpredictable weather-wise
-- Park City - Somewhat more expensive to fly to SLC than Denver; Friends liked Vail more.
Others I would consider now that I've been hanging around here and reading a lot more :
Some that I looked at and would consider but are having a crappy snow year :
Maybe that helps or at least gives you some ideas to research...