lol thanks guys.  so it sounds like i can plan on 2-3 extra cm.   the reason i ask is because 175-176 would be ideal, and i'm very hesitant to buy skis above that (i'm 175cm tall and 140 lb.)  i like my 169 walls, but would like to go a bit bigger. sounds like 171 anthems will do (but i'd prob. go with 178 if they were really 178).