My decision is between the Kawasaki 31 hp and the Kohler 29 EFI (I think old hp rating, probably more like 25 hp) I like both engines. I know the Kaw will have the hp and the Kohler will have better gph. My concern with the Kohler is hp. I have the 28 Kohler EFI on my 66" Super Z and it's smooth and reliable but not enough power to bag and push my thatch rake. I know I'm not comparing apples to apples because the SZ has bigger pumps which is drawing more hp. It may work on the 460.