I've got a pair of Boone powder skis that I got last year. I skied them since march (when we got 180") and almost everyday of the spring since I ended up working as a lift operator til June last year (god, if you're listening, please do that again). They got some decent abuse and were even blown by the wind into some rocks once. Despite all this, the only signs of wear they have so far are a few top sheet nicks. They're a super fun powder ski and I love them in crud and late season slush too. I haven't ridden any of Boone's park or all mtn skis so I can't comment on them, but from what I've heard they fall apart. Anyway it seems to me like the problems are mostly in the park/all mtn skis and the powder skis are solid, or maybe I just got a good pair, who knows.
Anyway, figured I'd pitch that in here.