Although my music server sounds wonderful connected to my Audio Research DAC, the separate CD Transport that I use still sounds slightly better connected to the same DAC. Even when I swapped the inputs from optical to RCA for both. So, when I really want to listen, sometimes I'll play the CD over the Music Server. But, when I really, really want to listen, I'll play the album on my turntable, which is still better sounding than my digital set up. They all sound wonderful, but there are differences. in this order. 1) TT to phono stage to pre-amp, 2) CD Transport to DAC to pre-amp, 3 ) Music Server to DAC to pre-amp. So, in answer to your question, I think I'll keep my CDs.
enjoy
enjoy