I have Yanmar mini excavators (and Takeuchi) and Kubota CTLs (and Takeuchi CTLs).
The Yanmars and Kubotas have been tremendously less problematic than the Takeuchis.
Yanmar tech help can be found, and, unfortunately, Kubota tech help is harder to find. But, I've never had to use either for tech support anywhere near as much as with Takeuchi.
I've got friends with both Kubota and Yanmar minis. Brand reliability appears to be similar, so, I say go with whichever dealer is better, smarter, closer.
Just don't expect Yanmar or Kubota to drop ship parts from the central warehouses. It ain't happening. That's where Caterpillar and Takeuchi shine.