we run walkers at work (poorly maintained - boss wont put any money back into them until drastic things happen-- i'm sick of them and our local dealer. i would like to get the exmark navigator when i get mowing on my own next year). anyways, i demo'd a john deere 757 25hp 60in today with the bagging system. i wasn't impressed. the thing seemed to lack a lot of power once the deck and discharge system were running, even worse when climbing hills. the hydros were smooth, but inconsistant -- with any little movement on the walkers, the wheels respond; on the 757 the hydros seemed to be mushy. It feels like the hydrostatic pumps are too small for the weight of the machine and the size of the tires. It makes it hard to back the machine off the trailer when there's only an inch of clearance on each side of the deck. I also found the huge size of machine to make it very counterproductive on the small lawns, but i do see where the thing would shine on the bigger lawns. the nice cut, the lack of noise, the quick adjust deck height, and the comfort were top notch, however. so my questions are: is there anything wrong with the machine? are others in the same class like this: exmark, grasshopper, dixie chopper, etc.?