I have had a small mowing business for almost 4 years now. I have a 3 acre property of my own and about 15 or 16 lawns that I do when I am not teaching during the school year. I have an Exmark with about 4,000 hours on it. It is starting to cut funny. It runs great but I cannot get the bladers to stay even. I am probably going to buy a new mower and wanted some advice on what mowers have the best functionality and are easiest to repair. I do have a John Deere walk behind that is great. Any advice would help. I have a deal rolling on a 60' Hustler Super Z new for 8300.00. also offering the same price on the Bunton. I did find a new John Deere 60' 757 for 7000.00 on the web. Any thoughts. I appreciate it.