One of the reasons I like Walker mowers with the SD option, is that they are light on the yard, and light on the trailer. Mine is 10 years old, and is running great still, so I dont see why everyone thinks it needs to be 1500 lbs. and an inch thick solid steel. Same with a Toro T bar belt drive walk behind. I do mostly residential. If I were doing large overgrown fields, I would go with something else. My walker has the speed up kit and low pro tires, so I can mow on hills, and get close to 7 mph ground speed which is about as fast as I can mow anyway. thoughts?? are too many mowers just too heavy?