I know that most people are going to flame me for saying this.........
Sony. You could get a Sony FX5700. It has a built in front, rear, sub RCA out. Built in EQ etc.
I know some people think Sony is average for SQ, but I ran a Sony Headunit all last year, and it was great.
Also, the FX5700 retails for $599, but they can be had for around $300.
Dion.
Quote from Sony Site:
Features (from sony site)
Key features
New Drive-S Chassis
Playback MP3s recorded to CD
View music details with MP3 ID3 TAG Version 2.4
CDR/RW Playback
CD-Text Display/Scroll
Repeat/Shuffle
7 Colour TFT Display
SSIR-EXA Digital Synthesiser Tuner
Preset - FM18/AM12
Preset List
BTM - Best Tuning Memory
S-MOSFET 4 x 52 Watts
Pre Out x 2
Sub Out
Aux-In - Lite
DSO2 - Dynamic Soundstage Organiser
EQ7 - Seven Band Equaliser/Seven Modes
Bass/Treble Control
Loudness
High Pass Filter
Low Pass Filter
BBE MP
CD Changer Control
MD Changer Control
Flip-Down/Detachable Front Panel