time for a new catback

time to upgrade my stock exhaust on my 96 ls sedan
what im looking for is: decent hp gains, decent cost, moderate sound. i dont want something as loud as the n1, that things a beast. cost im looking in the $450 range, the lower the better.
i was gonna get an apexi ws but someone said that there are almost no gains from it.
im liking the greddy sp, the comptech and the dc sports.
anyone know where i can get em at a nice competitive price?
id really like the comptech but its like 550.
any suggestions tips?
i know everybody and their brother have asked this question but im just a fool and am asking again. also id really like some info from people who have the exhausts mentioned above
thanks