a pair of these:

http://www.speakercity.com/cabasse/tc_21.shtml



Or a pair of these in the kicks:

http://www.speakercity.com/cabasse/bc_12_scs.shtml
with a pair of these http://www.speakercity.com/accuton/C2%2092.shtml in the doors.

For what you are describing as your needs, the infinity's would be the way to go if you want a simple drop in speaker.

Using some custom crossovers (which can be made with the most limited of soldering skills) with some peerless CSX mids and tweets would be my choice for that price range.



"If you are flammable and have legs, you are never blocking a fire exit" -Mitch Hedberg