i just picked up a 300.4 JLAudio V2 and its clear as can be.. still have some tweaking to do..
i would think what price range you are looking to stay at.. and then look in that range...
i have always loved alpine amps and decks.. and JL subs.. add a pic of my old car ran alpine deck alpine V12 amps, JL 13.5 V7 sub and MBQuarts speakers