I've got the FRPP M-5230-5GT which is actually the stinger. It is REALLY deep and screams in the high RPM's. Not raspy at all just quality loudness all through the power band. Best sounding muffler of em all.
I think I'm gonna try an off-road X-pipe and see what they sound like. I can get the Pypes x-pipe for $130. For everyone interested in the Magna Flow Axle Back system.... They are not much louder than stock.... A bit of a diffrent sound, but not that much diffrent than stock.... but the rolled tips are the S**T!!!
According to Borla, only the Borla Stingers carry Borla's warranty. The FRPP Stingers do not have the Borla warranty. According to Steeda, their axle-backs are NOT the same as the Borlas but DO carry a lifetime warranty.