Well I might be buying anther ztr, I have experience with a kaw engine, but am wondering about a 27 hp Kohler. I can get the same mower with a 25 kaw, or 27 Kohler, but have not heard much abot a 27 Kohler. Any truth to the fact that kaw's actually underrates their motor hp by 2 hp? What do you guys/girls think, I'm happy with my 23 kaw in my current 60"er, but just about everyone likes more power and was wondering what the torque values were of the 2 motors. Oh buy the way the new ztr will be a 60"er. I also have been considering the zd-21 or 28, reason 0% for 3 years. But I have alot of blades etc for my current brand. And have been very happy with it.