So, to continue this thread, Harley Lovegrove of Pearl Acoustics (Sibelius speaker line featuring Markaudio driver) tried his best to see if the CD transport function of a wide range of players made a difference. Actually did a 3-part Youtube series on this, starting with development of the CD player. He double blind tested with folks whose ears he trusted. Compared players from a vintage CD Walkman to a 5000EU modern Pro-Ject player. Newer, more expensive stuff wins.