Eldora is a small (by western standards) area for Denver and Boulder locals. I've only skied there early season before the bowl was open. It's worth a day there if you are nearby.
Crested Butte has a lot of genuinely steep and gnarly terrain, if you are looking for that. Plus cat skiing at Kebler Pass.
I haven't skied Winter Park since before Intrawest built it up. My son likes it now so it must be good for snowboarders. Crowded on weekends.
Steamboat is a family favorite because it's easy for all of us to get to, and it has the best town. Not too much steepness, but you can lap Christmas Tree Bowl above the tree line.
Copper has lots of groomers, nice big bowls and some easy hikes to steep terrain. It's too close to I70 and Breckinridge.
Steamboat and WP are at reasonable altitude. CB and Copper not so much.
FWIW Big Sky is the best bet on the Maxpass for good skiing for all abilities. Not so good for night life.
All your options are good, but none of them are perfect. Maybe Steamboat is perfect if you don't need gnarly terrain.
Edited by Bode Klammer - 9/5/16 at 8:19am