I actually talked quite a bit with a guy at vertex mold. He was telling me about some of the other spinners, telling the good & bad, not just bashing.
According to him, for professional use, the 1/2hp innovative 2speed is probably the best. Mainly because u can secure it to the solid wooden tub shops use. He says the donkee is a POS & is actually owned by a new company now, its not donkee anymore, but it does still shake a bunch.
After talking to him, & telling him how i typically sand or polish(i tend to put alot of weight on the ball to get some heat going), he said definately get the 1/2hp, the extra power will keep it from bogging down with the pressure.
Also, according to him, he hasnt had 1 single motor come back dead. He got 1 that they thought was the motor & it turned out to be some type of solenoid switch, not the motor at all.
IMO thats a damn good track record.
Get the vertex 1/2hp, its still cheaper than the donkee, or right at the same price i think, & MUCH cheaper than any of the innovative spinners.
www.vertexmold.comShawn