first of all.. bigman wants "high-end" speakers... that's usually talking about 800+ for a set of speakers that he want's to play "LOUD"... but he wants to pay 600 max...hmm.. he shouldn't be asking for high-end stuff... he should just be asking for "Loudest speaker he can buy for $600"... high end speakers cost more because of better materials and usually better SQ... Sounds like he needs to modify his Door of his convertible for 6X9 and feed each side at least 100 watts... people need to understand that the power rating of a speaker does not matter too much when SQ is consider, only just the amount of CLEAN power going into the speaker...also.. his topic was read as "best/SQ-component set- NO budget help"
he just have to do some more homework and learn more about sound quality