Turbo has turbo lag a SC has direct power off the line it all depends on were your going with the setup each have there benefits and disadvantages. SC make one hella of a sexy sound when set up right blower on top of that with gear to gear timing makes a turbo charger sound pussy.

gear to gear timing?

direct drive timing or gear to gear timing it doesn't use a chain just more accurate timing but it has one hell of a windeing sound