Hi Guys! Being relatively new to all of these forums, I have been surprised to see how few lawn tractors and garden tractors are being used. Walk-behinds and Z's seem to dominate, and I'm wondering why. I should mention that lawn care is a part-time prospect for me (young but retired police officer) but I'm starting to get into it and I'm looking to expand my business. I use two John Deere lawn tractors, happy with them, but I would rather walk than ride. Aside from that are there substantial reasons that I should be considering Z's or walk-behinds?. I do 100% residential and mow about five lawns per day. Time is not a major issue at this point.