Whiteface is a decent mountain and the town (Lake placid) is also nice. There's some activities to do since the Olympic Center is in town. If you don't get snow though, you'll most likely be skating on ice. Not to dis whiteface, but I've heard it been called iceface.
If you're looking for parks, Killington is definitely is better, though on the weekends the crowds can be rough. Okemo is also pretty cool with a nice park, but not really that steep. I can't speak for the other resorts since I haven't been to them yet. Check out the thread below, might offer some more insight.