Uh oh, another super vs. turbo thread
just kidding
There are plenty of arguements as to which is better. You can't really say which is better, it's all in what your goals and constraints are. But some of the main points are:
1. Turbos are alot more efficient, meaning you should be able to put more power to the road with the same amount of boost. The power curve will be broader than the (centrifugal) blower, so more acceleration throughout the power band.
2. Turbo kit's tend to cost more than a typical blower kit, but there is the option of the junkyard kit if you have the intuition of MacGuyver.
3. Turbo kit's are not easy to intall and take alot of time.
4. Turbo's make really really cool sound effects, as we all know.
5. Superchargers usually come from large companies with good technical support and policies, so the buyer may feel more comfortable with the purchase. Whereas the turbo kits come from smaller shops with a smaller customer base, and although the company may be the most honest and caring in the world, it's difficult to know that and turbo companies usually make the kits on order so it takes forever to get it and the probability of something being off is high. It may not be an issue, but it still takes time to send parts back and forth.
One thing is for sure, my first power adder is going to be a KB 1500. Turbo's are way out of my league!