I just got AR5s, and I'm finding the progressive mounting kinda wierd in powder.  I'm leaning back alot more than I feel I should.  They aren't the best powder ski out there.
They are AMAZING in park, like, they blow away everything else i've tried far away.  On groomers they're fine, slush (we've had a bit here) they're fine, in bumps good.  But Powder seems to be their weak point.
Without skiing we are just monkeys with car keys.