Heavenly and Northstar both have banger parks right now.
Heavenly just did a full rebuild and everything is set up nice. I haven't hit the jumps yet because it was windy, but they were sick before and I'm sure they're just as good now, if not better. The snow in the park is really firm right now, but hopefully the storms this weekend softens things up a bit.
Northstar has a fun slopestyle course in the mid-section of their park that was setup for the revolution tour and it's nice, but the first big jump is high impact and kind of easy to overshoot and the second jump is definitely a pretty flat jump... highspeed and mellow. They have a lot of the same stuff (urban down rails)... I'd say that heavenly has a slightly better variety of rails and boxes out right now. Also, the landings at Northstar get bombed out so fucking bad on some of the features. I've seen park crew just close a couple boxes before noon because the bomb holes were so bad.
Check out both parks though, you won't get bored.