I can not think of a better stand than the Stroppini that I bought in the 80's. The thing is stout, stable and has a fairly small foot-print.
Heres a pic from online (not my stand and pic is the older 3 wheel version). My stand and all? are now made with a front cross-tube with 2 wheels in front to make it very stable. I've had some very heavy motors on it and have no problem with stability. Also the plate and arms are adjustable so as to be able to center the load making it pretty easy to rotate.
edit--> The vertical and horizontal tube are one piece made with a bend, ne new versions don't have the big plate covering the bend, rather it's a bolted connection.