I am going to buy one of these things. The sled will be prepped for an Iron Dog Trail Class run (1.352 studded track, maybe a Trail Tank, my 2-up cargo seat, gear bags, the cool heated dash bag, wide clyde wind shield, GPS, etc). Afterwards it will meld with my 012 600 RMK, where the narrow A-arms will be transfered to the Assault and probably a longer track installed as well as the cool running boards now being offered. Some will say you should get the 155 Pro, but I desire a more mid-stream shorter tracked sled for my immediate needs. You will have to give up the mind-controlled manuverability of the Pro though (dang compromises). The Assault wins all the off-trail cross-over comparisons but comes up short on the on-trail tests. I will correct that. Also, I can work with the older styled powder skid. Now if it just came with the cogged final drive belt...(probably next year). 550iq