Generally nearly all of th‘em are pretty reliable if you do the maintenance and lube all the grease points at least once when you run them. Most diesel tractors should be warmed up before you start runnning them around, and cycling the hydraulics. I was taught to keep a grease gun on the tractor, and grease things while you let it warm up a bit. Most of the older tractors had factory tool boxes sized for the grease gun, a few wrenches and screwdrivers, and a couple of rags.
Where the brand starts to matter most is ten years down the road when you start needing repair parts, and have to work with the dealer.
Or, early on when you are accessorizing it. The Green and Orange guys have a lot more choices of things which bolt on. From auxiliary hydraulics, beverage holders, aftermarket cabs, turbo charger kits, upsized hydraulic pumps, etc. the Green and Orange guys have far more choices, readily available for their tractors.
Aftermarket implement manufacturers design things for the Green and Orange, which also work with the others. But if I ask a manufacturer or vendor of a 3-point implement if it will work with my TYM T233, they don’t have a clue unless I tell the how much my 3-point can lift, the PTO horsepower, and the hydraulic flow they definitely won’t know, and even if you tell the all the specs many of them still won’t know. Tell them it is a Green or Orange and which model, and they can give you an answer immediately.
If you can weld you can, and will, make a tooth bar, or grab handles, or whatever else you might need, to get your tractor optimized for you. If you can’t fabricate, and fix things yourself, you are better off with Green or Orange.