I started out with old, used pioneer players. Several years ago I decided to get a new, mid priced Onkyo player (around $500), thinking that it would surely sound better than what I'd been using. Well, it didn't. I thought about sending it back, but decided to keep it. Fast forward a few years and I started reading (here on AK) about DAC's. Since my Onkyo had coax out, I bought a Modi Multi, hooked it up and was amazed at the difference in sound. I've since bought other (used) players with coax out, and DAC's, and hear that same improvement in sound, when using the DAC's. I can hear a difference (improvement) between the DAC's, but not the players.
Since you already have a DAC, you could probably pick up a used player (with coax) on the cheap, just to see if you like what you hear. I'm betting you will.