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Simple way to make your choice
Turbo: Sporadic and non-linear power curve, look at a turbocharged vehicles dyno chart and the power and torque lines look like an earthquake registering on a seismograph.
Supercharger: Smooth and Linear power curve, look at a supercharged vehicles dyno chart and the power and torque lines look smooth and very straight through the RPMs
The effect of both is the same building boost higher then that of the atmospheric pressure entering the engine. The method of producing the power is different with a turbo your not sacrificing power to make power; however your increasing engine bay temps (in some instances depending on the amount of boost you actually increase the efficiency of your engine) But with superchargers your creating boost by running off the crank pulley and anything that runs off your crank pulley will rob your engine of power (not really a significant amount though) and with a supercharger there is less heat created by the boosted air allowing you more lenience with intercoolers and such this is why superchargers are used in carbureted applications for drag racing being less chance to percolate the fuel in the carburetor which is basically the same as detonation in a fuel injected car.
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