Didn't see anything, thought it would be a great sticky to have for easy info on what exhausts (mufflers, catbacks, midpipes, headers...) are availabe, some reviews on what you have on your car and some description of what they sound like (or videos are good too). When buying an exhaust it's hard to choose what you want because you just DON'T KNOW until it's on the car. By sharing our experiences with some we can help each other come to a better educated decision of what you/they are buying before they make a mistake or don't like it.
Lets start a list of whats out there right now and maybe if you have one of them, post a short review about the sound - the more unbiased and informative the better.
Catbacks:
TSE3 UUC Corsa
BMW Performance
Magnaflow
Eisenmann
Sport
Race
Active Autowerke
Borla
SuperSprint
Billy Boat
Bastuck
Remus
HKS
OBX
Rouge Ikon
DMS
Highline Tuning
Headers:
Ebay
Active Autowerke
SuperSprint
RD Sport
*let me know if I missed any