First off, I don't own a CAT...I own an ASV, but I'm sure you must know of more than just me. You said earlier that you've seen "plenty" of people trade their MTLs in. I know the odds are low, but I'm sure someone in your neck of the woods has to have reached 2000hrs on their machine. You should call Milton CAT for a reference. Maybe I'm really lucky, or just good. Or maybe the undercarriage will last plenty long if a guy operates it the way it should be operated, maintains it the way it should be, etc. ASV was in business for over 25 years making these undercarriages before Terex bought them for almost a half a billion dollars. I'm sure something must be working right. If not, that's a whole lot of 800-900 hour undercarriages in the garbage.
I personally sold over 200 Bobcat tracked machines as a former salesman and your blanket statement of "Thats why a lot of people go with the rigid undercarrage it will hold up a lot better." is a blind one because it simply isn't true. I have seen Bobcat undercarriages last longer than CAT undercarriages and I've seen just the opposite take place. See my comment above regarding operation, preventive maintenance, etc. You've been reading too many marketing materials, spec sheets and listening to too many young eager salesmen spewing Bobcat talking points.
I remember going to all those "Bobcat Bootcamps" over the years and wondering how what they preached could be so different to what I really saw out in the "real world". Well after about 7 of them it dawned on me that maybe they didn't spend enough time out in the market instead of in a office. Ultimately that is why I own a RC50 and a S220. Don't drink the Kool Aid.:drinkup