ddmsgtr1

Prochargers seem to have a reputation of being loud if that's what you're going for, and they do make good power, as well as the other ones you mentioned. But to add to the badass sound, a blow-thru system with the bypass valve vented to atmosphere is awesome. Alot of NMRA guys, turbo or blower, seem to use the procharger race valve. From what I've been told it has the best flow and a reasonable price.