In my fleet is a '39 Ford 9N, (slowly being restored), the rest were purchased new: '78 Kubota L-295DT, '82 Ford 1500DT, '95 Kubota L-35TLB, '2000 Ford New Holland 1720, '2000 JD 790, 2005 Kubota L-2800. I still own all of them.
I have never put a wrench to the Kubotas, other than routine maintenance, and they have never been to a shop for repairs either. I like all of them for their certain features, but if I could only have one, it would be a Kubota because of the maintenance factor; they don't break!
If you live in a sterile environment, any of them would be my choice, but I live close to a creek, which draws varments that will lunch on your tractors (electrical systems), especially later Fords and JD's, that have cost me about $500 sofar in repairs. (Rats love to eat the electrial wiring and computer boards/instrument wiring that is exposed under the dash.) The JD has a wiring harness exposed in the engine bay that was destroyed. They will also nest in these areas too!
Don't get caught in the factor that weight equals strength either. It's the quality of the metal, and not the weight of the tractor. Kubota gives one the option; you can always add weight, but it's nice to have the option for lawns etc.
If you have studied this board, you will realize that Kubotas are built in-house, with all the components built and manufactured by Kubota that gives them the reliability that promotes the sales.