Well that proves one is never too old, or at least I'm not, make a mistake and learn something new! Had not come across that before, and you're absolutely right!
As for the tractors, I have always liked the TN75's. Rugged farm utility tractors meant to survive hard use on the farm. The L5450, whose description I took to mean 226 hours on the new clutch, is a 1980's vintage classic, every bit as rugged as the TN75 and then some, but good ones are pretty rare these days. That price may be high, but a pristine unit would not be cheap. The L4150 is same generation tractor; smaller engine. No HSt with any of those of course.
Between the others, the condition of the specific tractor means a lot in making a choice, probably more than which brand it might be. If it's going to be primarily used for working in the woods, one of the old brutes has a lot going for it, if it's in decent shape.
Hi Grandad4-
The L5450 has 226 showing on the hour meter. It was bought by the current owner from a construction company, which makes me think they swapped out the dash. It's also been repainted... Some of these indicators scare me a little.
The TYM is very clean and has been loved. Probably has everything I need except front remote for a grapple and probably plenty of power. He has loaded the rear tires and the whole rig weighs 6000 lbs. Tires look almost new.
The TN75 is pretty much rust-free. I'm looking at it as it came off the field, so it's not clean (leaves, dirt, grease around the pins/zerks). It looks very rugged (FEL size, 3 pt size, etc.). Forklift attachment & QA bucket look quite heavy. It has 3 remotes. Hood has some kinks in it, but not bad. Front tires ~20%, Rear 40%.
So it looks like 1) heavy duty that will need tires & have more hours, Vs 2) newer/cleaner medium duty that would be ready to go.
One last question: The TYM has a mechanical shuttle, which means you still use the clutch from Fwd to Rev. The NH has hydraulic shuttle. Does that mean you don't have to use the clutch?