I've bought several things from cbrstereo so they get a :thumbup: from me.

Other places I look for stuff besides those mentioned above are:
www.carmedia1.com
www.sounddomain.com (bought my IDMAX from there :thumbup: )
www.onlinecarstereo.com
www.bsless.com (bought a JBL bp1200 from there :thumbup: )
www.nexxon.com (bought a a few 15L7's from there:thumbup: )
www.woofersetc.com
www.caraudiocrazy.com