I have a 200$ limit, I was thinking of the Klipsch KSW-10 10-Inch 225 Watt Subwoofer (Black) http://www.amazon.com/exec/obidos/tg/detail/-/B0009CDYF2/ref=ord_cart_shr?_encoding=UTF8&m=ATVPDKIKX0DER&v=glance or this one polk audio 10" http://www.amazon.com/Polk-Audio-10-Inch-Powered-Subwoofer/dp/B000PIFAOS/ref=sr_1_13?ie=UTF8&s=aht&qid=1264885727&sr=1-13 and please, if any of you have any other suggestions, please get back to me. I am starting to get my system back up (low end, but I still like it)