I don't know the CD23 but I love the beautiful music eminating from my Linn Ikemi. Good luck with your search.
I've owned the Ikemi, and I auditioned the CD23 before making my decision. To my ears, the Ikemi was the clear winner. The Cd23 has a smooth, warmish sound, but in comparison to the Ikemi, the top was rolled off, the bass and midbass were slow and "wooly," and the midrange seemed closed in. Audition them if you can with your components.