30ish years ago, Kubota was a no-name trying to get into the North American market.My experience with NH was parts were expensive with long lead times to get them in at the dealership.
TYM isn't on my radar because there isn't a dealer network or presence here. I would never consider an expensive machine without any support.
I've had good luck with parts pricing and availability on my Kubota's which is why I keep buying them. Knocking on wood even obscure parts from 30 year old attachments and 15 year old machines have been in stock or available within a business day or two and are reasonably priced. I have 3 local to me dealers (within 50km radius) to call on as well.
If this is a hobby then you are rolling the dice. If you are doing this commercially buy two TYM machines, maybe you will have one available to run when you need it...or at least have spare parts on hand.
The general rule of thumb is you get what you pay for.