Having my RPI GTc full for a a couple months now I couldn't be more happier. In comparison to Akros and other systems I've heard in person I'm happy with the sound, performance, price and compliments I get. An engine tune is a must to compliment it. Still a little loud in the parking garage at work and my buddies give me shit for it but who cares.
RPI GTc w/ RPI X-Pipe/DINAN Stage2/KWV3/20" Volk G2 Nitto INOVS/RPI AF + Red Scoops/Lux Angel Eyes.