Audio Systems: Up Graded Sound system, chrysler concord, clarion head

Question
i have a 2001 Chrysler Concord and i wanted to replace the stereo with a better one.  i already have a set of Jensen 6x9s installed and they are crystal clear.  i have a set of Kenwood 6.5s for the front and wanted to know wut radio and amp combo i should get to finish the set up.  i have a Logic RXW10 Sub and a box already purchased,  i jsut wanted to know which is the best radio and Amp i should buy. thank you.

Answer
Without knowing your budget:

Good entry-level Clarion head unit. 99.00 with 2 sets of preamp outs so you can fade front to rear from the deck.
http://www.crutchfield.com/S-yV5f4WH2ivb/cgi-bin/ProdView.asp?g=266150&I=020DB36...

Very long lasting, nearly bulletproof and high quality sounding class A/B amp:
Hifonics 5 channel amp 4x55 watts and 1x200 239.00
http://www.caraudiodeals.com/hifonics-zxi8006-740w-rms-zeus-zxi-series-amplifier...

*You can spend less on an amp, but you will not get much better bang for the buck and flexibility than this one offers. It is the kind of amp which properly setup, will outlast the vehicle.
JM