I have 2 of the Tormach 5 inch CNC vises which work beautifully for 99.9% of what I do.
I don't take in outside work any more but I manufacture a line of running gear for gas powered remote control race boats and I'm starting to get in to gas powered 1/5 scale gas powered 4 wheel drive trucks.
Actually, with just a couple of exceptions, if I can't hold a half dozen parts on one hand, they're too big and I don't want to do them.