Are the tire marks left by small ZTRs alot worse than the ones left by walk-behinds. What makes a 36" - 48" Walk-Behind that much better than a 34"-44" ZTR? I remember someone comparing them on one of Fareway's posts, but I thought the person obviously like one way more than the other impairing their ability to make a fair comparison. It could have been Fareway himself. Anyways, what do you goys think makes one better than the other?