I've never run one. The advertising makes me cringe. It's like a 17 year old kid going into a pawn shop and buying himself a 1' diameter belt buckle that say's. "World's Champion Heavy-Weight Boxer".
..........."full of sound and fury, Signifying nothing".............Macbeth.
And then, I'm the guy who runs a 3-1/2" exhaust to announce my arrival. Is there a difference? Maybe no.