Supercharger or Turbo?

What's better and why? Supercharger or Turbo for a '99 Honda civic Ex?
Other then just getting the turbo or supercharger, what else would I need?

I got a really nice hookup at a dealership near me and they are willing to hook me the hell up with a turbo or supercharger. The thing is I never really looked into them before because I never had the money to do anything with my motor. (I'm all show) ANYHOW, I know trubo and Supercharger 101.. but I'm getting mixed answers from the dealership, speed shops, and the net about what I need after I get a turbo/supercharger..
So, what's the best to get????????? HELP!!!!