Flowmasters sound cool... this is clearly evident because EVERY car 'with a pair' driving by has 'em. They dont flow well though... almost every real HP muffler out there kills 'em on power, some by a lot.

Personally, i've never been a fan ov Magnaflows sound. Nice mufflers, good quality, very nice power (some say the best), but yeah... i gotta be in love with the sound so... no.

Spintech or Borla... sound AND performance. Spintechs have a sound that not everyone will like, but my Charger's tone never got a single bad review. Personally... for my cars i'd take either ov these. Had Spintechs on the Charger and on the 96GT Mustang, both with a Dr. Gas X-pipe. Glorious. The current GT will likely get Borlas... just to see if i like it better.