I mow about 3 acres weekly --30 times a year. I was looking at the Scag TT 61 w/ 25 hp Kubota because I want another 10+ years of another great mower. Even got the dealer down to 11,500 for the TT. ( a great deal ! ) I just saw this: 2005 Scag Velocity 70 hr. demo 61 advantage deck 27 hp Kohler (vertical shaft) with Triple bagger. Demoed only dealer --with full warranty as of sale date. for $ 6800. With a ztr my mowing time will be about 1.25 hours/ mow = 37.5 hrs/ year I have a relatively light mow yard as I'm on a small (shale soil ) knoll. I don't know anything about the Kohler 27 hp Vertical shaft air-cooled engine "could use some extra advice here". I'm thinking the Scag Velocity would better suit my "needs"--even though the Scag TT w/kubota would appeal to my desires. Opinions ??