hey buddy, welcome to HAN. lemme give you a few sites to look at to further asist you in choosing an exhaust.
http://www.team-integra.net/sections...?ArticleID=309
for sounds of exhaust.
http://www.team-integra.net/sections...?ArticleID=451
as far as exhaust goes their all the same if your buying a full cat back, the choice is what kind of sound. if i were you, i'd look at greddy evo or the sp, nice and deep all the way (i choose evo II). but hey... that's me.