Oooh, I like the Mean Machine (but not the price), Cats are a good choice with a fair mixture of stability and performance, Have a look at MHZ USA, Fine Design, BBY Racing, RumRunner Racing and Offshore electrics to begin with.

Your final choice of hull will be largely dictated by the conditions where you intend to use it, for example in choppy water deep Vee's are best

The Aqua Jet is not a bad place to start, good reports from many, but for just that little bit more then look at those above, also try:

[link=http://www.microhydros.com/]MicroHydros[/link]

It's hard to see how much fun Micros are until you run one, then you are hooked!

They Also have free Plans if you feel upto building from scratch