I own that Bearcat model and couldn't be happier. Of course it doesn't feed like a hydraulic unit would, but it certainly self feeds. I have chipped an incredible amount of brush with it and when I went to flip the knives, they were still like new! The intake chute is the limiting factor for self feeding in my experience. Usually if it doesn't feed, the branches are rubbing on the chute holding it back and a gentle push sends it on it's way. Clean logs and single branches go down no problem.
A
chipper that has a hydraulic feed needs much more horsepower to run it than this unit. I have a
B2630 which is only 26hp, 19 hp on the pto. I can chip 5" wood, 15 feet long easily. The flywheel is the heaviest by far in it's class, which is why I chose it over the Wallenstein. I know the Wallenstein is a great
chipper, but I assume that the tractor is doing considerably more work to keep the knives moving at speed in tough material because the flywheel is like half the weight. The Bearcat has the inertia to keep on chugging.
It is also very compact, which is to some it's only downfall. The discharge is out the side on the bottom, and you need to keep kicking the pile away from the discharge every few minutes. I'm rather used to it, but some may find it a pain. There is a blower and discharge spout available for the unit, but again, I was worried that the blower would rob precious horsepower.