Replying to Best Pow/Big Mountain Ski?

Hello everyone.

I am looking for a ski that is super floaty, yet can turn "fast" in the trees and have enough stability to charge down big powder mountains at higher speeds. I still have yet to find one that really works...

I've heard that the "ON3P Cease and Desist" is a good one. I've also been looking at an "Atomic Bent Chetler" and a "K2 Hellbent". Others finally include "Armada JJ/Magic J" and the "Atomic Automatic".

I'd like to lean more to something that has more than a 120mm waist, if this is possible, and with a twin tip(Although I am not much of a trick skier, sometimes I like having the luxury)

Thank you all.