Upgrade Help: CD player/transport/DAc

I am running an old Exposure Super XV, System Audio Mantra 10, and a Marantz 5004 cd player.

The cd player is the weak link. I was wondering if I wanted to spend about $700.00 used should I buy a DAC and use the Marantz as the transport or would it be better just to get a used cd player. The Marantz 5004 sells for about $300 new.

I am looking for something less bright the veers to the warm side. Liquid sounds with good sound stage. I am willing to put resolution and bass slam in the back seat for the things I want.

Any advice? Thanks