In reply to Joe G:
I think your pretty much on the spot there with the K2 wayback and backup's. They have a great reputation. Personally i use Black diamond verdicts. They are great all mountain ski's, though i would say they are way to wide under the foot for piste, unless you really push them.
Ive also used some Movment gladiators. They are great! around 90 under the foot, great on piste as well as offpiste. I really would recommend getting around 90mm waist for a great all rounder.