This was a good article explaining the differences....
The big con of the turbo charger is the uneven power-band. At low RPM's the engine is not producing enough exhaust pressure for the turbo charger to add power. This is known as turbo lag. Once it gets going though, it's a very massive boost. So massive, in fact, that a poorly, setup turbo charger can be dangerous: the sudden and dramatic increase in power can cause the handling characteristics of the car to change. This was especially true of the older Porsche 911 Turbos, which had a habit of swinging the back-end out if you weren't aware when the turbo boost hit. The other con of the turbo charger is its maintenance. There are more moving parts than in a supercharger, and some models require cool down time after heavy use before the engine can be shut off.
Superchargers are better used for the daily driver who wants a little more power in their engine without sacrificing the reliability or worrying about sudden amounts of power causing a spinout. In fact, there have been mini-vans that have come standard with superchargers, attesting to its same power. Turbo chargers are better used in sports cars, whose handling can accommodate the sudden change in power, where whose drivers are willing to sacrifice some reliability for a large increase in speed.
If it was me I would go Supercharger just because I like to keep things simple you know the KISS factor (Keep It Simple Stupid)
here some links for supercharger I have been looking at
http://www.horsepowerfreaks.com/performanceparts/Ford/Mustang/Superchargers/Supercharger_Kitshttp://www.paxtonauto.com/products.php?cid=6
