Shopping fore new riding lawn mower.

I now own a 12 year old Scotts 17.5 hp Kohler with a 42" cut mower. I am looking at either a John Deere D140, a Cub Cadet LTX 1046M (Kohler) or a LTX1046KW, which has a Kawasaki engine. After reading many online reviews I am leaning towards the CC with the Kawasaki engine. I would appreciate any information pro and con concerning these mowers. Tks, 983K