DAC, DAC, DAC.
Use your current CDP till it breaks, then use your DAC for a more modern set-up. Myself I've thrown away my CDP a long time ago, and have never missed it.
As for those who hear a difference in sound quality between different sources through the same DAC, I'm pretty sure their routines for sound check fails. With no time delay and no changes of listening positions between the samples, the sound should be identical.