I used to get a lot of comments on my diamond eye exhaust. I didn't care much for the fitment. But it's the cheapest you can get, and the sound was better than the more expensive brands. They've changed the muffler design a little. So I don't really know if they sound as good anymore. The last few I have installed have all been MBRP.
of it were me, and i was dead set on 5" dual out, id buy it in pieces.
down pipe, BIG ASS donaldson mufler, then tail pipes.
that way you get that 5" sewer pipe rumble, but quiet with no drone.