Hi, don't know if this will help but I've lived on acreage for 20 plus years now and have kept about a three acre yard the whole time. I started with a John Deere 5300 with a 72" brush hog on the back to get it into shape. Then wanted a more finished look an went to a John Deere 14se 21" walk behind. Using that took 12 hours and I used that for 15 plus years. A niehbor brought me a Great Dane Super Surfer one day and I used that for about 3 years. That mower could not hold a hill, but cut the time down to five hours. I then switched to a Wright Stander 61" with a replacement 23 hp Kawasaki. I highly recommend that mower. Mine is an 04 and the only thing that has really gone wrong is a cracked wheel motor mount that bolts to the frame. Other than that just normal maintenance. Belts, batteries, blades, fluid changes, filters and good gas. This mower has held any hill I've put it on and I've got some steep ones out here. It's easy to work on and durable. I've also put some rear tires on it and spark plugs of course. Other than that it's really been a great mower. It takes me about three hours now to mow. I'm looking for a fuel injected ZK now because the guy that sold it to me wants to buy it back. I'd like something with more power anyway and newer. Hope this helps. :cool2: