Turbochargers are "better". Superchargers are more practical.
Depending what type of turbo setup you want to run, you could be looking at a several thousand dollars to do it right. Superchargers are atleast 1/3 cheaper than a basic turbo setup (non-jy setup).
Like everyone says to posts like these: Superchargers retard a small amount of power from the engine in order to spin. Turbochargers use exhaust to spin so you're not retarding any power.
Superchargers take longer to spool, but you can get smaller pullies for them i think. Turbochargers can spool whenever you want them to, just research the right size turbine(s) and compressor(s), boost controllers/timers, etc.
Turbos are a
very costly project. Junkyard setups are still more expensive than superchargers (factoring in engine upgrades as well, you don't want a stock bottom end with a turbocharger that's making high psi

)
So, if you have a ton of time, a nice sized wallet, and have another car to drive for awhile, go the turbocharger route.
If you're mustang is a daily driver and you just want to showcase alittle speed every now and then, just get a supercharger.
It'd be nice to see another turbo/twin turbo v6 on this board though.
