Thanks for the suggestions!
Well, the trouble is, I have also auditioned the CD5 and could even compare both to a DAC8 with my CD3 putting out the digital signal. I liked the CD5 better (more organic and better timbres) but it was not worth the price differential IMO, because it was not a vast improvement over the CD3.
Likewise in combination with the DAC8 the presentation was different though, similar to that of the CD3 rather than that of CD5, punchy, with very good timing and slightly better imaging, maybe not so natural as CD5 but altogether better suited to rock and pop music than the CD5. Again here, the improvements were not worth considering buying a DAC8 alongside my CD3.
To sum up, the contenders were slightly better in some but not in all or most areas that are important to me.
I have to add that I listen 50% to alternative and rock, 20% to singer/song-writer, 20% to classic and 10% to jazz music.