just what do you plan on doing with it.i have an old 1953 d2 cat that i use to landscape around the house and keep my trail thru the woods open.i love the little thing,wouldn't trade it for anything,have to have a rope to start it though,thing weighs like 7000 lbs with blade so hauling is no problem.if your gonna use it to do work i'd stcik with either a jd or cat,jd makes smaller units,like the 455 and cat has the d3,from what i have seen on the komatsu's is the parts are pretty high priced.