Looking at getting an assault as a back up sled/spring sled /wind blown days. My question is has anybody lined up the different years and does one run better than the rest? I know people say that the 13's run better than the 12's but is that because of the belt drive? I can buy a 13 assault for the same price as a 14 assault and found a decent used 12 to. So has anybody lined up pretty much stock sleds with chain cases from the different years? I like the 13 and 14 for the seat and boards but I can put a drop in kit on a 12 with out a fuel box and its cheaper soooo.