CD playback devices can essentially be divided into two parts, much like a computer. The first part is the disk reader, which reads the digital data on the CD and outputs a digital data stream, much like any storage device reader on a computer. For what this is worth, the digital data stream is essentially perfect as long as the drive is in good working order and has a full implementation of the error correction circuits. Green felt markers and belt drive systems not really required.

The second part is the active circuits that do the digital filtering, analog filtering, digital to analog conversion, and analog output circuits. Much like the capability of your computer hardware and software. Results will vary.

Most cannot even define what the second half of the CD playback device is supposed to do, let alone do it correctly. There are major differences in the linearity and capability here from design to design. Many are done with a few 25 cent op-amps, with musical results expected from a Walmart state of the art audio system. Some are done better.
To suggest the the differences in engineering sophistication and results is simply a "different flavor" to your music is essentially sanctioning the whole mid-fi commercial approach of blinking lights and bells and whistles and 2000 watts of peak music power flavoring to your quest for outstanding audio performance.
There are better ways to do some things, differences in DAC design are not attempts by serious designers to serve your toast with chicken ripple jelly.
Want to know what a DAC needs to do? Call me at 651-330-9871. Would take far to long to write it all up here, but if you are actually curious, and not just close minded, let me know and i will do my best to explain it.
Regards,
Frank Van Alstine