Best in dash CD changer replacement?

Any of you guys replaced your factory stereo? I have an 03 Yukon slt w/ the bose system and I'm looking for an upgrade. I'd love to buy an in dash changer (6 disc) and have some better audio control than what my factory unit offers.

Anybody replaced their stereo with something you'd recommend?

Don't know of any aftermarket in-dash changers. Pioneer is releasing their new 6 disc in dash head unit this month. Plays DVDs, Cd, CD-R, CD-RW, mp3, wma, and I think aac and Divx. Nice piece.

You're the man JK. Thanks