If you don't have a use for CD's I would check out this Sony for $140

It's the deck I currently have, and the second Sony I've owned- they make surprisingly good decks!

Has;

A very clean and eye-catching display, with much visual customization
'Tune-tray'; instead of CD, your iPod is stored inside
24bit DAC
17w RMS x4
Three 4v pre-outs
7-Band Parametric EQ
Listener Position calibration on each speaker, can go manually to the cm.
Quite customizable H/LPF with three adjustable slopes each
Very quick and easy search, I have thousands of songs on my iPod and I can get to whatever I want, be it playlists, bands, or songs; in seconds.
etc.

Sony's specs here

Main downsides are obviously no CD, and no AUX; because some dumbass decided replacing the AUX with a second USB would be a good idea..