Perrin exhaust has no cat and it's very loud. I can't really stand the smell of a no cat exhaust. Also, it doesn't have a flex pipe so you would need a motor mount.
Apex exhaust has the option to get catless or cat mid-pipe. but the exhaust is hanging low. It might have a better flow without the extra bent but I am really worry about the speed bump and rough road.
Corksport has a good price. no cat as well. it's 2.4" diameter exhaust compare to the others which is 3". If you plan to build up your motor, get the 3".
Another choice will be vibrant. It's 3 inches, and has a flex pipe, cat and resonator. Very good sound. They have a GB on the market place where it's going for $700 plus shipping. I think it's cheaper than both Perrin and Apex, and IMHO a better exhaust system as well.
You could also pay $200 to get the Corkspot S pipe to make it a full turbo back exhaust. $900 to get a full TB exhaust, which is 2.5 to 3". You can't really beat that price unless you go to custom.
Hope that helps.