Love the power of the Kawasaki, but as everybody has said, they are really bad on fuel. I personally didn't like the 29 EFI on the TT, didn't seem to have enough power in thick stuff. Granted, I was not trying it out on a well manicured lawn as DATHORPE is probably using it on, but I noticed that the engine wanted to die out in thick stuff. It was a brand new machine, so that probably had something to do with the motor not putting out at its full potential yet.
I did like the TT over the Cheetah. For my needs, the 2 speeds on the Cheetah just seems like something else to tear up, even though I am sure it serves some clients well. As Ron has said above, the TT is tried and true. However, I don't think you would really have any regrets with either machine.
If I were you, I would purchase which ever one just felt right to you. If you don't, you will always second guess yourself.