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You pay a couple bucks more for the name but the fit and finish is second to none. The way I looked at it I haven't cut any corners anywhere else might as well spend the money on the proven performance. I swayed away from some of the newcomers to the 'full' 3" market because if you look closely the taper isn't quite as smooth as AR's. Does it really make a difference, I have no idea, but I know having a smooth taper is a good thing. The AMS dp back I have is all about straight and smooth so again it made sense to me.
Performance wise I offered to take the wife for a ride after I got them installed to butt dyno them. She politely joined but pointed out she probably wouldn't notice. We both definitely did (I went catless). On the sound front I was honestly shocked but how small the change in volume was. It's there but not night and day by any means. No one I know, non-car people, have noticed or commented. I do have the crackle between shifts and gurgle on throttle let off but it's just a slightly more aggressive version of what I already had going with the AMS system. Also on the pleasantly surprised streak there is no rasp and still what I would consider no drone. If you wanted to nitpick you might call the louder note at ~2100 rpm 'drone'.
In summary seriously satisfied with my purchase.