Apex'i and Tanabe are my choices, personally. I like how nice and simple the Super Racing Medallion (or was it Hyper?

) is. In addition, Apex'i exhausts are really nice on any car. Go World Sport if you want a stock-like sound (not loud), or go N1 or Dunk if you're looking to make some noise.

Personally, I have an Apex'i Dunk muffler (not cat-back) with stock piping and it already gives a deep tone. Just imagine if I got a cat-back or custom mandrel bent piping..... DEEP RICH TONE.

(and loud if I rev high, haha)