Heavenly is so unbelievably meh! Keep your mouth shut if any patrolers stop you for whatever reason they see fit. Also keep the switch riding to a min outside the park. I seem to get pulled more than any other resort at Heavenly. I feel I spend more time on a lift that on my whips there.. Short runs, long lifts, TheNorthFace bay area fuckers and moody ass patrollers.
Sierra is the shit. Quality mountain all round. Some solid fun 'full of everything' runs there.
NorthStar, only go if you plan on riding park all day. Other than that, pretty flat. Watch your switch shit again. A little less moody than Heavenly but still up there with moody shits.
I feel pretty strongly about how you get treated as a supposedly "guest" on mountain and how you should be treated and where I spend my cash riding. Sure you'll enjoy where ever you go. Fingers crossed for snow.