Background: I'm 26 and have been skiing for 22 years for the first 17 exclusively on the east coast mostly upstate NY, Vermont, and Canada, But for the past 5 years I've been going to Colorado at least 2 times a season. I'm 5'11" and 160 lbs aggressive hard charging skier that loves screaming down groomers, doesn't mind some crud, and slows it down just a bit for the extremely steep. However recently I've wanted to get into the trees, bumps, and more powder onto something that's more lively and user friendly in those conditions, than my current 2006 170cm Rossignol z9 TI. When I get into the trees or bumps or where ever there is powder with the it feels too stiff and very resistant to turning in these conditions.
I can get great deals on Salomon and Volkl ski's and the Shogun and Mantra appear to fit what I want: 98-100mm under foot with camber, and tip rocker. I still want to be able to scream down groomers but I also want something nimble with enough float for powder and trees. Of these two skis which would you recommend?
Also what length would you recommend for someone my height and weight given that I'm not very heavy. I'm torn between the 170 and 177 for the Mantra, and the 173 and a 182 for the Shogun.
your help is greatly appreciated.