I am in the market to buy a new ZTR and have narrowed it down to the JD 757 - 60" 25Kaw and the Scag Turf Tiger - 61" 27 Kohler. I demo'd both and I think the power and cut are pretty much the same. The 757 - seems to ride better and is $800 cheaper. The only problem I had with it was the amount of clippings that it threw back on you. The dealer is changing the blades to a different type and I am going to demo it again. The motor also backfired every time it was shut down. The Scag - performed well. It did have a bumpy ride and it got stuck once. But for the most part it ran trouble free. Both of these ZTR's are a far cry from what I am used to. I currently cut everything with an International cub w/42" belly mower, 30" sears rider, 24" Kee and a 22' Lawn Boy. I am more concerned about durability. I am mowing about 9 acres with lots of trees and shrubs. This is a big purchase for me and I would appreciate your opinions. Thanks for your help.