Originally Posted by kscoyote Turbos are more reliable (IMHO) SC is probably the most reliable of the bunch.
It's not so much total hp, but the way it's produced. All will give about the same total number, given the same parameters, -there's only so much fuel and air you can cram into the engine. But the way it's crammed in there can make the vehicle more susceptible to breakage.
Turbos, I think, are definitely a more reliable power adder than nitrous. They are alot easier on pistons and rods, again assuming the thing is tuned correctly. I'm not sure if the supercharger is any more reliable than the turbo however. I've never seen anything to point to one being better than the other, all else equal.