I have to agree with Chazro. I have heard the cd23 and it is an absolutely awesome cdp!! In my systems, I have found it is hard to get much better sound out of a digital front end when you have something that is already good. The difference based on the money spent would be minimal. I understand that drugs don't stop the upgrade bug, been there :) Maybe a differnt amp or speakers? Have you considered an outboard DAC? The Arcam would make a fine transport..
