which catback is the best?

I'm looking to get a catback for my car but, don't which one to get. I want a deep smooth tone and not that loud tone that a muffler gives. I'm also looking for performance wise also.

thanks!

Also, can you list some sites that I can get them from also!

most catbacks are the same...i'd get 2.25 inch pipe to a Dynomax muffler

www.rksport.com www.mantapart.com www.rsmracing.com i think those three places make them. or you can go to a local shop and have them bend you up some piping, i would go with 2.25 or 2.5

2.5'' pipe is your best bet for piping this will give you that deep tone, and a muffler with a straight through design like borla works good