any "best speaker" lists that contain pioneer, kenwood, alpine, clarion, etc makes me laugh.
any "best speaker" list that contains sony makes me want to projectile vomit over the person who said it.
you should start by mentioning your budget, and what else you've heard that sounds good to your ears. if you can't tell the difference between sony xplod and boston acoustics, for example, then save your money (P.S. bostons shit all over them you cloth-eared git! ).
chances are if you're asking about the BEST speakers you will a) have never heard of them and b) have a bitch of a time finding them