The 2000 ES is said to be an updated version of the 222ES that I have and I find the DACs to be pretty decent. In stereo, my receiver's DACs are a little better likely due to the fact that in stereo, it cascades the DACs from all the channels for a very clean sound, so I normally let the receiver take care of it. Prior to the 8300, the 222ES's DACs sounded better than any of my receivers. For redbook, the receiver is doing bass management regardless of digital or analog, so pick the one that sounds better to you.
For SACD, you'll have no choice but to use analog.