Inexpensive Streamer for Office System

If I had a bigger budget I was thinking of using the Wattson Audio digital streamer as it is coaxial output only. 

Coaxial and AES, I use the latter. Only had it for a few weeks, it is in a separate system so no real sound comparisons have been done against my main rig, but what a quality piece of gear; works perfectly, easy to do firmware updates, has their own Wattson app that works very well if one doesn't want Roon endpoint or Qobuz/Tidal connect, or Audirvana etc. And like everything with a wall wort if you want to upgrade it spend as much as you like on an aftermarket power supply. Hard not to recommend it: Let me know if you have any other questions. Check out Han's review if you haven't already: https://www.youtube.com/watch?v=p-HeiVfAz4w

Thanks for your input.  I think the end game will be the Wattson, but not upfront.

Actually was planning on using the coaxial input if possible.  That was why I included the Metrum gear on my list.  If I do end up using the USB input will definitely find a streamer with good clock. 

op

you need a streamer with a good clock when you DO NOT use usb connection to the dac (usb lets the dac’s clock override, whereas for spdif connections the streamer's clock takes over...)

Do the Auralic streamers ( including the earlier models ) have good clocks?

Yes, the Auralic dacs and streamers have good femto clock systems, sometimes dual clocks of various precisions. My Altair G1.1 is a dual 72-femtosecond clock system.

There are a lot of Aries of different generations on the secondhand market and fires sales happening at vendors now to clear out inventory.