Yes, I've seen that one and a couple others. There's two of Craig's Car on the dyno in their shop that sound pretty wicked to me. Could just be the acoustics of the shop helping out, though. WS6GXP posted a couple on the BB when he installed his that he bought from another forum member used as well.
I'm sure I'll get to hear plenty of solo exhausts at the meet. Just was hoping to be able to hear an MBRP before I make a decision. Ultimately, I'd like to do custom system with the MBRP mufflers center-exit through one of Norm's facias (probably with the diffuser section, since the carbon fiber is already kind of ricey

)