First off I don't think there's anything wrong with Kioti. We have a dealer about 25-30 minutes away that's been there I believe since Kioti came to the US. We stopped in there when my son was looking for a new tractor this Spring. Told them what we were looking for and they gave us some ballpark figures and that's as far as it went, just too close in price to go with Kioti over the Kubota.
Now I know you're not looking at the Kubota Grand series but it's been brought up, there's no comparison to the MX to Grand L series, ride, noise(especially the gear whine of the transmission) and even solid feel, the MX just doesn't even come close to the Grand. If you can get a Kioti with HST and all the other features someone listed for a lot less than a Grand L or even the MX you should buy it. The seat on the MX sucks and so does all the tranny whine, it's a worker but it's a stripped down worker and that's basically what he was looking for and something without a DPF and that was a left over MX5100.
As far as Kioti being the up and coming tractor, I just don't see it. We just don't many people running Kioti tractors even with a close by dealer. Kubota is scaring the crap out of Deere, evident by their huge barrage of YouTube videos slamming Kubota, even one saying how Kubota is designed to fail. Our local JD dealer that's actually 20-some dealerships has gone so far as to buy 3 Kubota's just to take to their Demo Days and Open House's to park them beside Deere's to make a comparison and have their sale people slam it. Even had one guy tell us how you can't put a side arm long reach boom mower on a Kubota because the Kubota will break half, geez. At our local dealer they compared a 5055E with a cab to an MX5100 gear drive, pretty unfair comparison if you ask me. The funny thing was most of the folks there were commenting on why they were doing the comparison at all. A couple were even talking about Kubota's they owned and had never had any trouble out of them at all. I think the whole thing makes Deere look desperate. Deere makes good stuff just don't like their marketing these days. The 5065M here, you couldn't pry away from my wife and son, they recently test drove a JD 5085E wanting to get a bit more HP for certain tasks and after driving the 5085E said they wouldn't touch it no way, no how over the M series.
I know I've gone off on a tangent but I'm done now.