As to the kubota and kioti comparison - all three make good machines. Deere is the only game in town (locally )for parts/service should I need something. Kubota was #2 in consideration, but getting the same size/performance would've cost more in kubota paint, and I'm the odd duck around here in wanting gears and a clutch. I also liked Deere's layout better on the 5e's.
I really liked the bobcat branded kioti when I looked at them in '11 or '12 (when I first started eyeing tractors), but I also really liked the bigger yanmars CC was distributing at the time as well. None of them had the loader capacity I have now.
Kioti's dealer support is so scarce in MN, I didn't feel confident I'd have alternatives should the dealer flake like what happened with kubota's after informing them I wasn't spending as much as I originally had been considering. I was the only customer in the room when I was considering a $65k machine, but when that didn't happen I might as well have been a ghost.
Massey Ferguson had my attention with their 2600 hd series, but there again, the tractors just didn't quite fit me as well as the green one. Agco makes some good stuff, but that line is also india built and with the perkins engine I felt better with the 3029 deere that's 24yrs of proven reliability instead.
It's getting harder to find a bad tractor. I don't have any years of experience to go off, but I have been spinning wrenches most of my life, and used to deal with OTR tractor-trailer's, helicopters for a short stretch, and damn near anything else with an engine, so I'm not exactly guessing either.
Ground clearance, lift capacity, dealer support, how I fit the machine; all played a part in the decision. What really sold me was watching all the videos on youtube of the Indians beating on these same machines, and guys farming SE Asia in mud with them. They handle a lot of abuse! My pulling trees should be easy on it.