if you want a good performing exhaust that is somewhat subtle, get one of the following:
GReddy SP2 (what I have) $600 or so
Apex'i WS2 $600-$700 (if i recall correctly)
RS*R Ex-Mag (probably the quietest out there, tone is amazing) $600'ish
Tanabe Hyper Medallion (the NON-CANISTER EXHAUST, has a traditional oval muffler) $600-$700
Personally, I have the SP2 on my DA and ask anyone who has heard it. It sounds amazing.
Probably the single best cross between VOLUME and TONE. Only a little louder than stock, overall (maybe 10 decibels more, ESTIMATE) and the tone is "the stuff dreams are made of"
vid:
NOOOOOOOOOOOOT MY CAR!!! just so you know:
http://www.youtube.com/watch?v=az9nSkIke1E
car BELONGED to ErMaK's_DA9 (from G2IC and Honda-Tech) he has since sold the car
this vid inspired me to get the SP2.