definately go to smuggs if your interested in trees and steeps but still the ok park option. if you dont give a fuck about skiing park at all id got to mad river glen for some even better trees and steeps than smuggs. mad river just lacks a park other than like 3 rails they set up on the practice race slope. bush has a great park (one of the best in the east) and the mountain is huge. they just lack terrain variety like smuggs or mad river which have much more challenging terrain than bush. stowe has great terrain and great park and very expensive tickets. the thing about stowe though is that you can hike a little bit and get above the tree line and there arnt too many places in the east you can do that with
honestly i would go to mad river for half the vaca, and bush for the other half. so you get the best park and the best all mountain/ trees. also theyre only 10 mins apart so you can stay in the same lodge/hotel