Folks talk about how durable old iron is compared to the CUTs but I can remember the old 8N gas burner tractor my Dad had and how many times he had to replace the points/condenser to get it to start, overhaul the carb to keep the float from sticking and this was a regular occurrence. I did the same with my 70 model Ford car, tune ups were frequent. We wouldnt stand for that to happen in todays vehicles or tractors. We want them to run forever with little maintenance other than oil change. Even grease fittings are disappearing on everything except the FEL. Cost wise in yesterdays dollars vs buying power of todays dollar compared to our salaries, are we getting bargains or not. $10K in 70's would buy you a Ford 9000 120 HP tractor without a cab. Hourly salary for an industrial journeyman was about $7 per hour in my local at that time. So that was about 75% of my gross yearly salary. I cant say that I can tell you what a 120 HP tractor goes for today since I have no need for that size, but I would think that with what we expect them to have on them today they would be above $100K which by my calcs would be above a full years salary for the same position mentioned. SO I think that the costs for these tractors is at least 25% higher now than in the 70's and durability is maybe less also since we have so many bells and whistles on them now that costs a small fortune to replace that it convinces everyone to trade them for newer models quicker than the old iron was traded. Also with the CUT normal usage, the drive train gets more work out in a shorter period of time than the old Ag tractors ever got. When I used mine to build a pond with the FEL, I would honestly state that I shifted F to R more in 2 days than I did with the 9000 all the time we had it. It went into reverse to hook up to an implement then it was forward non-stop for 5-6 hours till lunch, then forward 6 more till dinner and then maybe 4 or more till stopping for the day. I would put 16 hours per day on it and in 2-3 days have as many hours as many CUT owners get in a year. But those CUT hours likely put more wear and tear on them than the thousands of hours per year that the big iron Ag tractors got. The big problem with todays engines is that when they do break, they cost much more to fix.