I have the Magnaflow setup and have no problems to date. I think it sound great! The bassani is also a good system also but the price is very high. I spent the extra money on mods for my car, so you can say that the Magnaflow system made more HP.....Another note if you go with the Mag system have it all welded in place.
Good luck
Pic of exhaust
http://www.svtmustangcobraclub.com/p...idm/davidm.htm