Tough choice, out of the 3 I've only skied the walls, and I pretty much told you about them in your other thread. They are a fun ski, a little stiff, but still fun to ski. 100% symmetrical means they'll rip all over the mountain forward and switch. Extremely durable, I beat the crap out of mine and had nothing but a few minor scratches on the base (easily fixed with some wax) and some very minor topsheet chipping (happens to every ski - especially on the east coast with the ice). I loved mine, the only thing I don't like about the 2010 is the graphic - could be so much better (although I haven't seen them in person yet, so they may be sicker than I think) I like the 08 graphic the best (the green), but that's mostly cause I'm a fan of green.
As far as the ON3P's and the Punx, I don't know much, but I've excellent things about both. Wish I could help more on those.