Best streamer, don't want Roon, don't want a screen, A DAC is OK but not necessary

If you want a streamer without built-in DAC, there is the Lindemann Network II for about $1000USD. (You can add an USB drive if desired) The app is excellent as well.

There is also the Melco N100 with 5tb storage for $2500 - possibly the best sounding family of music servers. I use the JPlay app with the Melco.