I have one, but have not yet used it. I got a good deal on a used one, and look forward to using it in the next few months. I have seen them demonstrated, and you can do some pretty neat things with them. One of the advantages of them is getting the maximum project from a small amount of wood. Google ringmaster--there are some good ideas and videos available.
"Individual commitment to a group effort--that is what makes a team work, a company work, a society work, a civilization work."