I have z12s on my msps and z10s on my shit silencer, their a good binding if your not skiing too hard but on my msps ive been lucky they havent busted yet my buddy already busted his, i just got em cuz they were cheap and easy to get my hands on at the time. Their a fun binding because their so light but i would suggest something burlier at your weight, if you ski hard if not they should hold up alright, just been lucky to not have too many nasty falls on mine yet.