i have both,
i will say that all mountain(preferably dont use either) afterbangs work better because the punx are so light they just get banged around a ton in the crustier/moglier/cruddier snow.
BUTBUTBUTBUT
IN THE PARK! i love the punx way more than i ever did the afterbangs, they are snappy and stiff when they need to be, but never when they dont. the afterbangs just feel dead, while the punx want to do everything you teel them to do, albeit with lots of energy(maybe a bit too much).
Punx>afterbangs
except for all mountain, but in that case why not look at a stiffer, damper ski like the volkl wall or the k2 recoil