theyre good packs a bunch of my friends have them. i have the tactic which is ski specific and lower profile, and i love it. i would advise against getting it in white. one of my friends has the heli pro in white and now its pretty filthy and not good looking. so, good pack, bad color choice.
My bro has the white heli pro, he only uses it for skiing,(not school or whatever) I think if you use it only for skiing I woldnt worry about it getting too dirty. As far as the features go....you cant beat it. the fleece pocket is money!