I've heard the resonated version & it's not too bad soundin...but w/o a res it sounds like crap!!
That's just my opionion though. It def reminded me of a honda. I have the mbrp and have gotten many compliments by the ricer world and the muscle car guys!
I have it and I love it. I bought it through Steeda and after installing it myself, I was very impressed. I still have my stock cat on so its still fairly quiet. I drove a 5.0L mustang for a while with glass packs, and I must say that the magna is a very nice sounding exhaust. I have heard it with race headers on it and it does sound very ricey. With the catback on you will notice a popping noise (basically all of the gas igniting in the cat) after acclerating or during deceleration. I also have had people applaud the exhaust that drive v-8s and from other 4 cyl cars. Overall I am pretty happy with it, but if you want to stray away from an exhaust that gets ricey in the higher RPMs then get a Borla or FocusSport Stealth.
My magnaflow is good, but it was too loud. I got a couple of noise violations, so I cut in a Dynomax muffler and now the car is almost as quiet as stock, but the exhaust flows really well. I could have added a resonater, but the dynomax muffler was about 1/3 the cost of the magnaflow resonater.
i will say that before i put the header on the sound of the magnaflow was amazing. very deep and not very loud. now with the header it screams like a rally car, but does tend to get raspy in the upper rpms.