A Coote. It's often cited as the "bang for the buck" belt grinder among the knife-making crowd. High quality, made to order, but not terribly expensive. This guy's $400.
I have a 1hp hung beneath it, with SFPMs of 1300, 2700, and 5400. The lowest speed doesn't spark or heat much; metal mostly comes off as black dust. The high speed is a demon.
I've used it for metal (obviously) wood and stone. Equally capable with all. This guy is my "secret" for cutting curves on my machining projects, since I don't have a CNC.
Those machines of William's are 2die4. Awesome.