O.K. now i've mown over an acre of overgrown grass with a demo Hustler Z 60". I was very impressed over-all with the machine. I was a little disappointed however with the power of the 23 hp kawasaki. It bogged more than I expected mowing somewhat overgrown grass. It didn't sag terribly but it was clear that the engine labored when I pushed it. How much of a difference in grass cutting torque would I notice with one of Hustler's bigger engine options? I do realize the demo unit's blades could be thrashed. I also realize that I would probably be keeping my grass to a height that would never bog the mower. Also: How well do you guys like the suspension seat Hustler offers? Thanks again.