performence will be equal, as far as sound goes... (gosh these question are like cockroaches), the sound clips will give u a good idea, but the only way to know for sure is to listen to them out on your own.
I own a greddy evo. since i've owned not one person has said it sounds "okay," it's only been compliments. that should mean alot, so evo is a great exhaust.
99 ls integra cai, H4-2-1 ss, E-evo.