To O.P. - Please post up your evaluation/comments on your new machine after you have a chance to use it a little. I am very interested in the CC ZTXS series, especially regarding side-hill operation.
Also wondering about the Kawasaki/Kohler engine debate. I have had a JD lawn tractor with a Kawi engine since 1989 and never a problem, but no experience with Kohlers. Looks like the Kawi engine cost about $1200 more on the CC ZTXS series than the Kohler and I wonder if there could possibly be that much difference in quality, perfomance, etc.
Finally, I have some concerns about how all the gears, rods and bushings will hold up on the "steering wheel" type ZTR's over time.
Otherwise, the CC ZTXS sounds like it might be a good fit for my property so I am thinking seriously about one.
Thanks and wishing you best of luck with the new machine.