The world is your oyster now,, so many choices,, travel or desktop? Budget? What cans or IEMs? Listening style/music? Get these questions done, for the rest to chime in.
You will enjoy this upgrade, you are now in for some fun...
Right now on MD, this is the one that intrigues me the most if you can wait,, CTH + SDAC DAC/Amp
if you can't wait, get an inexpensive travel, quick delivery MD deal, one too while you wait, with your now unstated (so we can assume unlimited;) budget: CEntrance DACport Slim