DLIII - curent update status

Was considering one of the Cullen mods, but haven't paid much attention to digital sources for a while now, so I don't really have a sense of what's there. Using a stock DLIII with a Squeezebox Duet. CD's playing direct from a Bryston.

Appreciate any and all advice on this. thanks
As much as I loved my PS Audio DLIII, instead of an upgrade I changed to an Eastern Electric Minimax Tube DAC. They're both easy to sell but I went with a tube instead. Both fine units. Similar price, upgrade vs EE. Different flavors. I'm keeping the EE.
I also had a PSA DLlll had it modified by Cullen, replaced with a W4S Dac 1 which is a much better sounding unit.