The Kubota 7510 (especially in the Turf model) is very competitive with the CK20. In fact, when you compare prices from an aggressive discounting Kubota dealer (often out of state) with a local small Kioti dealer, the Kubota often is a lot cheaper. That especially holds true if you include the MMM which is a real steal with the Kubota and very expensive for the CK20. I know it is somewhat unfair to compare different types of dealers but for those of us who rate price above local dealer convenience, the fact is it is easier to find a heavily discounting Kubota dealer than Kioti dealer. I can only think of one internet savy Kioti dealer but there are quite a few Kobota dealers who quote excellent deals via email.
If I had not stumbled onto an excellent barely used CK20 at my local Kioti dealer, I would more likely have bought the 7510 due to price. Both are excellent and well made machines. I am glad I have the Kioti as the first task I face is lots of land clearing and the heavier CK20 is better suited to that task. If the land had already been cleared sufficienty to mow without a bush hog, the 7510 would have made a lot more sense.