Personal Recomendation?

Alpine KTP-445 Power Pack Upgrade your Alpine receiver to 45 watts RMS x 4 at Crutchfield.com

that says it only pairs with alpine decks, but most techs can wire it for almost any HU, that powers door speakers like a champ without the hassle of most external amps.

which speakers you use is up to you, it all comes down to what you like, head to best buy, or if you can, your local Car audio store and have a listen.