ORIGINAL: Lomcevak Duck

I power mine with an OS .32SX and the stock muffler. They have been out of production for a while now, but come up on Ebay NIB for less than $100 all the time. A few months back I bought three for $70-$75 each, NIB. They'll turn an 8x8 at 18,000 no problem and are notoriously easy to run and last forever. I've never worn one out, and I've run one for 10 years before I lost it. (In a kudzu patch) They also respond well to tuned pipes.

No matter what you choose for power, be sure to use a bladder tank, like the Jett or Tetra.