I went to Batchelder in Lebanon, ME this weekend and drove the CK20 with cab and the CK30. The cab on the CK20 albeit smaller than the one on the CK30 was very comfortable. The CK30 didnt have a cab but it felt awesome, very sturdy and powerful.
Just a word about Batchelder, Eric who seemed to be working in the garage at the time was great! He spent about an hour with me explaining everything, letting me drive them and giving me quotes. If it comes to dealerships, even though they are on the small side, they really give you a good feeling about dealing with them.
I haven't seen evidence that Kiotis are that much cheaper than what I was quoted by the Kubota dealer... maybe that's because the Kubota was a pretty competitive price. However Batchelder/Kioti offered things like free delivery, free tire filling, free quick attach bucket... all points that again sway me to the Kioti.