I still have a Dodson DA-217 MkIID from about a decade back that I keep around, but from which I have since upgraded (I am currently using a StahlTek Vekian Opus DAC, and also have an EMM Labs DCC2 in a second system).
The key question, though, is how much are you looking to spend on the upgrade? To be honest, I think the transport is by far the weakest link in the chain you have, and you could make much more of a difference starting with an upgrade there. For example, adding a modified CEC TL-1 would give you a great sounding digital setup, so long as you were not looking to invest in SACD or computer audio (I had this setup for several years, and based on my recollection, it is reasonably competitive with a lot of what I hear today for Redbook CD playback). There are a few other transports in the $2-3K range that I also think would make a nice improvement.
However, another route that may make sense is to go for a more recent single unit box, particularly if you were looking for USB input or SACD playback - for example, the Esoteric K-05 may be a good option in that regard. I would caution you in thinking that just because something in "newer" it is definitely "better" - I would guess you would probably have to spend $5k+ on a one box unit today to beat the Dodson with a high end transport.
Best of luck.