You could either try Glacier 3000 / Les Diablerets (stay at Demonium, www.demonium-mc.com)
or Zermatt (try the matterhorn hostel or haus theodul). Problem with Zermatt is they stop shaping the park at the end of October. Zermatt is your best bet for sick pow early november though, if you are lucky. Glacier 3000 will have a sweet park set up if the snow allows.
But to be honest I would just fuck it and go to Val Senales (Gentleman park) or to Kaunertal. This is what Val Senales looks like: