I have a Waring Pro, that I received as a gift, and I wouldn't recommend it.
Mine has issues with the main driver not engaging with the meat auger enough, and it stripped off the end of the driver. I'll fix it eventually.
On the other hand, I have an older, super-cheap grinder from Princess Auto, that I have been unable to kill. $5 at a garage sale. Sounds like a sack of hammers in a cement mixer, but grinds OK. Just picked up one of the PA electric grinders for a bud while they were on sale for $69. It works well and runs a lot quieter than the old one. I think it was a pretty good buy for the money. I have a small hand crank that I have used for doing a whole tub of meat, once or twice. It can be done in pretty short order, if you are set up and able to anchor the grinder solidly.
Dig back through the sausage making threads in the Recipes sub-forum, and there are a few pictures of some belt driven reduction set-ups for the larger sizes of Chinese manual grinders (they come with a pulley, IIRC) that would run quiet and not take up a pile of space or money. Looked like maybe $50 worth of belts and bearings to build the reduction drive. Less if you are a scrounge.
Cold cold cold! Keep the meat cold, and it'll grind better, esp. if it's at all fatty.
Sharp blades and plates, as tight as you can get the lock ring, too.
Cheers
Trev