Copper Mountain CO.

As you may have already heard, and will probably hear again in this thread, Copper puts an unreal amount of resources into their terrain parks and training facilities. They also do a great job of paying attention to all of their parks, not just the pro- and Olympic-sized ones.
Park aside, they also have some solid terrain offerings that I've had a lot of fun with. Here are some spots that you should explore if you're the all-mountain type:
- Sierra lift (wind lip on looker's left is fun to throw down on)
- Tucker snowcat (they might require avy gear now, maybe someone can correct me?)
- Storm King (usually windy and very exposed, invest in a buff)
Generally, you should avoid the far West side of the mountain, it's mostly slow lifts meant for beginners.
Another nice thing about Copper is that it's one of the few non-Vail Resorts mountains in Summit, so the food prices aren't ridiculous and the safety patrollers won't shaft you for passing a jerry.
Overall, you picked a pretty good mountain for your trip, regardless of what type of skiing you like.

Copper is definitely a super fun mountain.
The parks are amazing, on par with Breck and Keystone, sometimes Copper may even have more creative setups than those guys.
Off piste/big mountain kind of stuff is really fun, though it can be whiteout and nasty weather prone. Hit the Tucker Mountain snowcat for sure if you have the opportunity. Spaulding Bowl can be super fun, and not so crowded, too.
Though I'm sure you'll get lots more good info on here, you can also check out our guide to Copper Mountain.