with what you've listed I'd go soundstream. I still have my old school granite comps, and spl comps. They've lasted a LONG time, and can get retardedly loud.

 

i think in your case i would buy a good amp (400.4wrms) and just hook it up to the speakers you all ready have just tune the gains til it sounds good. if you like the sound cool, but if not just buy a good set of speakers that match the amp better. I would buy soundstream (good prices+good stuff). I know a few people with there amps and they are all happy with them. but i dont know much about there speakers tho. i do know soundstream amps push kicker speakers hard.