There is no comparison between a Kioti and any Chinese tractor that I have experienced so far. A new CK30 Kioti shuttle shift with loader will be roughly $15K, a new KAMA TS254C with loader (similar size and engine displacement) can be had for arount $ 10K or a little less. the Jinma is usually a little less than the KAMA.
The Kioti has more than twice the warranty and is needed less, a fully synchro shuttle trans, tilt steering, a great 3 point set up, shiny smooth paint, even on the engine! etc. A real dealer network. This is comptitive in quality and features to any major brand in my opinion.
However, as you say, it is more expensive so comparing the KAMA and JInma (I sell both, Kioti too) do sell many more Chinese tractors than S. Korean tractors, mostly due to price.
The TS series KAMA has a beefier chassis than the 200 series Jinma, especially the front differential, important for heavy loader use. The engine in the TS254C is a Y385 same as used in 25/38HP Jinmas. Some importers have sold this engine as 30HP, claiming dyno tests, I don't know and I call it a 25HP. The KAMA shuttle is now under the steering wheel on TS series and is very easy shifting, much more solid feeling than the Jinma shuttle and you still have 8 forward and 8 reverse. OR you can get a creeper and have 16 forward gears on the KAMA TS series. The steering cylinder is mounted high on the axle on teh TS also. Draft and position is standard on the lift.
If you compare to the Jinma 300 series, the chassis is comparable, the 300 series Jinma is not available with shuttle OR creeper, as far as I know, just 8x2 gear trans.
The KAMA TS254C and TS354C have similar features to LE version Jinmas (spring seat, cluster guages, wrap around headlight, etc.).
The new KAMA TS354X has the EPA approved engine that Jinma 300 series is using (35HP TY395), but does not offer the shuttle under the steering wheel yet, it is on the trans as prior TS series was.
This is getting long. so if you have specific area you want more info it might be best to PM me or we can discuss it here and I will try to stay to the point...