I'm planning on buying a s/c soon and have been researching them for a while. The Kenne Bell looks great for a street car. If you want to get more info on the web about them check out
www.kenne-bell.com. Its not Kenne Bell's official website but it has some good info and some forums. One of the things I like about the Kenne Bell is that the boost is not controlled by the engine rpm, its controlled by the throttle position. So you can have full boost at ~2000 rpm, but that's only if you floor it. If you give it part throttle, you'll get part boost.
Hope this helps. No matter what you get, you're going to have fun!
Mike