I am planning on purchasing my first system. So I was wondering which brands of subs & amps to stay away from. A friend of mine has Audiobahn, those sound good. A co-worker has Kicker in his car and damn don't those sound good. And another friend has Pioneer and those sound pretty good as well. Aslo are those prepackaged subs+amp "systems" (http://www.circuitcity.com/ccd/productDetail.do?oid=80801&c=1&cm_re=main marquee-_-Save up to $50 on subwoofers and amplifiers-_-MTX subwoofer/amplifier package) that circuitcity and bestbuy have any good?? Any help is aprreciated.