Sorry about all the confusion #31798!
It's a debate that comes up every now and then between me and ParaZapper. He thinks his Zapper is better because it is more powerful, and I think the Zapperplans.com Zapper is better because it follows Dr. Clark's specs. They both work and both kill parasites, so it's not that big of a deal. Bob Beck is a bit different, and I believe he uses more power, and is quite a bit more expensive. -2tuff- knows a bit about them.
You can take a look at ParaZapper's Zappers at http://www.paradevices.com
and the ZP at http://www.zapperplans.com
and there are also more good ones on ebay etc.
Good Zapping/Blood Electrifying!