sound/performance exhuast

For the seniors that know about performance, your help is needed with the right choice for an exhuast system for the base model of the 2003 RSX. Right now my line up is Invidia, Hayame, Greedy, and Magnaflow. Of those four which i'll pick, I need to know which rates the best in performance, and which one rates the best with sound, and which one rates the best with both characteristics if there is one.

Basically, i want the one that performs the best (highest HP gain), however, it should have a silent idle sound and not sound like a chainsaw under 3000rpm. I-vtec kicks in around 5000rpm's so having an itimidating sound is great.

AGAIN, FOR THOSE THAT KNOW THEIR STUFF AND NOT THOSE THAT JUST KNOW REPUTATION....THANKS

iight dude... i 16 so not no senior but i no my shit when i comes to our rsx's... i got one my self... anyways greddy is nice i went and heard one on a rsx and i sounded nice as hell BUT then i got into it and it blew a$$ on V-Tech...... so all on u their... and greddy is alot of money for mostley looks and that idle sound... apexi was the one i was very close to getting but i found one "more for the money"... Vibrant... i saw the dynos.. wow outpreforms the apexi and is like $100 cheaper... so out of ur choices tho i would go magnaflow just b/c thier hp gains are decent... but i have the Vibrant on my car and truthfully it sounds BAAAADDDD.... but that is my :2cents: