I also have the 08/09's with z12's, and it is probably the lightest setup on the market, but DO NOT buy the salomon Z12 bindings, theyre crap, i broke em three or four times, and they pre release even when you have the din at 11, an I'm only 145 lbs, but anyways, the reno jibs were sick, I'm mainly a jump guy and there was the normal top sheet damage but nothing more than that, they are super fast, super stable,super poppy, and pretty stiff. They are also durable on rails, I rode em 45+ days and they have held up great. The only complaint was about the stiffness for nose butters, it makes em way harder to do, but still doable.This problem is prolly fixed by the new core in the 2010 model.
All in all they are a fantastic park ski.