I have another thread posted that is related to this question but there were several questions in one thread so to get an answer I thought hey I will post a separate thread. I am going to purchase a large Walkbehind and a ZTR in the next few months. Which engines should I get ? Kawasaki or Kohler and why ? Are there any major known problems or disadvantages to either ? The ZTR will be either an Exmark, Ferris, or Toro. The Walk behind will be one of the same ! Engine size 15 for wb and 23 to 27 for ZTR ! Thanks for the Help !