What dealer are you using that is taking so long? I've only dealt with the one in Lineboro and the one in Frederick. I don't much care for the Frederick dealer, but the Lineboro dealer seems to be OK. They've been selling Kioti a long long time. They replaced a head gasket on my tractor, but it took over 4 weeks. Claimed the machine shop that they had machine the head took a couple of weeks to get it back. It was at the peak of gardening season in late April.
It did appear they only had one real mechanic for the more technical repairs. That might be part of the reason. Many times, getting the part is the big delay. I believe they stock most parts in North Carolina. Just not sure about their responsiveness to dealer orders.
I'm not sure you'd see much difference regardless of brand, depending on timing and nature of repair.
It's not easy being patient when you need your machine. My head gasket occurred on the exact day that I had 20 yards of mulch dumped on a county culdesac. I had to move all of it by hand. That's the way it goes sometimes.
Tom