I wasn't going to touch the eclipse headunit/speaker comment with a 10 ft pole. Glad someone else did. The 8053 unit offered by Eclipse has long been a HUGE favorite among audiophiles. It is perhaps THE most popular and well liked "used" piece of equipment in all of car audio. It has maintained a solid value of $150-$200 for what it does. 16v balanced outputs, no onboard amp, and the ever enjoyable crossover and equalizer networks. What is there NOT to drool about?
I'd buy a higher end Eclipse or Pioneer Premier (model dependent) unit over ALL other units out there save 5 very highly sought after HU's: Clarion 9255, Alpine F1 status, Denon Z1, McIntosh, or Nak CD700 (all of these are out of just about everyone's price range)