Season Pass sales for ski season begin ( Breckenridge, Keystone, A-Basin and Vail or Copper Mountain, Winter Park and Steamboat for my 2 personal favorites) this weekend, with the best deals available just through September 3rd. Obviously we have lots of other resorts in the state, but access is an issue for some such as Telluride, and price and access are both issues at Aspen / Snowmass, and size is more an issue at places like Ski Cooper, Monarch, Wolf Creek, etc.
Colorado has the best mountains, the best snow (ok Utah, I know you like yours too!), and when you live here, the best ski deals! Prices have all gone up this year, and so have restrictions (black out dates, transferability of 4 packs etc), but the season pass deals are still a pretty great bargain. We have had our season passes at Copper Mountain for the last several years, but I decided to switch back to the Colorado Pass with Breckendridge, Keystone, A Basin (which is usually open until Memorial Day) and 10 days at Vail. I love the mountain at Copper, but when they raised the season pass rate to $350 from $260, it is not that great of a deal compared with the Colorado Pass that for $419 also includes 10 days at Vail, and gives more variety (such as night skiing at Keystone, longer season at A Basin, etc). The kids will probably do 4 packs this year, given how busy they were last year and the higher prices, which are $119 at Copper and $129 for Breck/Keystone.