i bought a r3644 because of the price and extras from an individual. after using it i noticed that my tractor had extras compared to kioti, kabota,new holland. it was little things like the joy stick for the fel, covers over levers, two remotes and ect. that made me think i did all right. from what i gather they are all made elsewhere put together in usa. my idea is find a place that has parts close and service and compare what parts and peaces they are made up with. i compared my 38hp to my neighbors 30hp new holland it is like the xlt vs the xl. his shape and style is cruder, i have eaiser acsess to my controls, ind or trans drivin pto, i dont have to reach in front of myself for my loader, more lights, but my hood is plastic his is metal, he has a grill guard i dont,. the kioti is alot like the that new holland. i cant pronounce the name of his engine but i can mine and also have heard of mine. the cast iron of the machines look just like each other but his dipsticks are cheaper made. his has the same filter cartridge as mine. as for that , i have a friend that has a very nice kabota 50hp +-range and the air filter, radiator battery are set up just like mine and the filters are the same (looks like they came from the same manufactor). so its all comes down to dealer support, price and the little things that make it easier for the operator. research them, sit on them, kick the tires , open the hood, and make that dealer sell you one. let that dealer tell you why his machine is better make him do some research , he is working for you. i dont think for the most part they are much different than each other and it all comes down to the operator. I always hear dont by chinese, russian but i dont know.
but i really like and i am proud of my montanna and have had no problems for 260hrs on it .
The thing i would change is i would get a cab for the winter and mowing in the summer (dust,heat)