Here's my take from a recent post:
The 189cm K2 Shreditor 102's blew me away on piste. (Note the length-- 189cm.) Having a strongly rockered tips and tails, I didn't expect to like them much. I'm a hard-charging skier in the purely forward direction, but they felt long, edgy and damp. A plank on the snow-- a lot like my 183cm un-rockered Head Monster 82's! On the firm and grippy groomers they reminded me of my GS skis of yore.
Their stiffness is about medium-- I'd guess like K2 Sidestashes and just less than Line Influence 105s.
Off piste they steered really well when driven. They gave me confidence to charge through trees and cliffy areas more than I had earlier in the day. I have no use for rockered tails, but they didn't seem to hurt anything.
At 189cm, they're a big ski for me (155 lbs. and 58 years), so I tried the 179's. YUCK! There's a huge difference between the two. The 179's are much softer and feel like greasy, short barrel staves.
So the 189cm model is my new favorite big mountain ski. Better than Volkl Katanas (too much rocker), Dynastar 105s (too much rocker and too stiff), K2 Sidestashes (too much rocker), Nordica Girishs (too stiff) and maybe Influence 105s (too stiff) for me.
How well you are able to ski is related to how hard you are willing to fall.