Just my 2 cents:
Steamboat would be my recommendation. The cruising runs are 1st rate. The town is authentic and very walkable. Although it is a couple of miles from the resort, the free shuttle service serves all of Main Street downtown and will drop you at the resort at least as close as a ski-in condo. There are many excellent bars and restaurants along Main Street, all within easy walking distance. The town's elevation is relatively low for Colorado and would be less of a potential burden than the higher resorts. Due to the lower elevation, I would not schedule a trip later than the 1st week of March.
No need for a rental car. Fly into nearby Haden and have one of the many, friendly shuttles take you directly to your destination. They will also arrange a pick-up to take you back to the airport when you leave.
As a PC resident I agree, go to Steamboat. Just kidding, come on out. Seriously it was a joke. More or less.