Earier in the postings there was an argument about the longevity of the Caterpillar/ASV undercarriage. I currently have a CAT 257 from 2003 with just under 600 hours on it and the track system is completely shot. I never turn the machine aggressively on pavement and it is used almost entirely in mud/dirt conditions with few rocks. Either way you look at it, the track life of the undercarriage on the CAT machines is just not as good for several reasons. 1) the rollers are coated in a rubber/polyeurethane material which wears especially when exposed to any sort of gravel or rock 2) the tracks are only made by ASV and maybe one 3rd party manufacturer so there is little incentive to lower prices....
Ultimately, I think the undercarriage on the CAT's is their most significant fault. I'm getting rid of my CAT 257 and buying a Deere CT332 almost entirely because of this fact, although the 40 percent increase in power, and nearly double tipping load also provides some incentive. I personally would say that at the moment, the Deere CT332 is the best CTL in the business.