That is hard to say. I still have an old California Audio Labs Delta and Sigma II that I bought in the early 1990s. some years ago I replace the Delta transport with a Theta Jade and that made a big difference. Eventually the Jade stopped working and I started looking for a replacement. I auditioned quite a few players as I used my old Delta again. Finally I bought an Audio Research CD7 which I have been very happy with. Recently I heard an old California Audio Labs Tempest II SE that had been modded. I owned one of these in the late 1980s. It was in a lot of ways similar to my CD7. I have found that both the transport and DAC can make a big difference in the sound and that new is not always better. Though in general transports mechanisms in both the "top of the line" players and stand alone transports have improved quite a bit in the last few years.
Do you have many SACDs or DVD audios? I did not so I chose to go with a dedicated CD player. Thanks to Microsoft HDCD is pretty much dead. SACD and DVD Audio never really caught on. The number of SACDs available is very limited.

