Magnaflow Or Flowmaster?

My buddies dad works in s muffler specialty shop and said Flowmaster Top Magnaflow in sound anyday. theyre professionals as well, But Magnaflow is a straight flow and flowmaster is passaged

hey guys im back and in business again trying to mod my car, i dropped cash over the summer on some new system pieces and my bud Rick has promised to help on pricing up even better system pieces, im dreaming of a dual SLP exhaust for my Ho. omg . i got my car back from the body shop about mid october after my silly fender bender in may LOL. she looks perfect again though the winter has her all filthy now and i aint got the time to clean her LMAO. ill try to post pics of my new system parts and jeeze the SLP exhaust sounds kickass on the 3400, btw i love the new graphics Eric. ill drop you a line sometime dude. Kevin