Alpine Meadows always has a bomb jump lime and some cool rails in the late spring, so be sure to head over there. Jonahs, the park manager, has plans to set up the park so you can ski Palisades (some pretty fun terrain, steep with nice cliffs) to a jib yard below. From the jib yard to a rail garden, then to a jump line. Jonahs builds the best jumps, plus the whole-mountain park run will make it sick.
Squaw is an awesome place- there are endless options. The book Squallywood by Scott Gaffney outlines virtually every cool line at squaw, save some of the most secret ones. The park gets crazy if they build the mainline, but Belmont is pretty small.
Northstar = flat and crowded.
Heavenly = flat and crowded, except for Mott and killbrew canyons. Those are pretty killington-y though, just a little steeper.
Homewood is a place you go to if the rest of the resorts are closed because of winds. When it gusts 160 at Alpine, homewood is usually ok. That'll only happen if it's snowing.
Boreal is a cool place for creative jibs- go on a day when you plan to ski the night, too, because almost the entire park is lit.
Sugarbowl is one of my favorite places on a pow day. Otherwise, expect awesome terrain big mountain type terrain, surprisingly creative jibs, and surprisingly dissapointing jumps, judging by a recent trip.