Been with Kubota for almost 30 years. I will say some of the quality the Japanese were known for is slipping a bit IMO and it's not just with kubota. Overall their quality is still there but there are smaller things like cupholder placement ( yeah I know wha wha) seat and pedal positioning etc. thatmake one wonder if they are following Detroit into the late 70's early 80's.
Deere? Most everyone I know has had more issues with them than any other brand and comparison wise they are substantially higher unless things ave changed recently.