As soon as we got the ball into the shop I did the good old touch stuff to the ball test. I highly recommend doing this test around your own shop. We found that the
BaneBots wheels, which are relatively inexpensive, gripped the ball best. They are also particularly nice because the ones we have are hex on the inside. All we have to do is run the shaft through them and drive the shaft with a motor which is chained to a sprocket, also hex, which sits on the shaft, and we have our roller.
I hope that helps.