Specfically a 4200-ub, or deh- p4100ub. Might consider other pioneer head units if the price is right.
the P-6600 has iPod control & is 2x nicer than the units you listed //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gifsorry, wasn't specific enough. i need ipod control
2 aux inputs > usbwould you be including the cable for the ipod? Also the 6600 doesn't have usb. 4200 has 4V preouts, 6600 has 2.2V preouts