In the extent of exhaust, power gains are very comparable, with neither one giving you an extensive "edge." It's not like the Magnaflow is gonna give you a 20hp gain and the MBRP 30hp. They'll both be within 1hp of each other. What it comes down to is sound preference. We sell both at SpeedLogix, and I'd be glad to help you with either. My email is listed below, and my cell phone is available via PM.

Exhaust systems are a blast to shop for, and with three different setups on my SRTs, I would LOVE to help you pick yours!!