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

+1 Wiim Pro Plus, used $160, with ifi ipower 2 / X or 5V/2A LPS. Don’t recommend 5V/1A.  If you don't wish to spend the extra, make sure to use old, low ripple noise Apple 10VA recharger. 

I really love the SOtM SMS200 Ultra Neo.  Super simple and sounds great.

Get a Raspberry Pi, a DAC with a TOS output and install Volumio. 

Maybe I should be more specific. I have an Auralic Altair G2.1 (DAC and streamer) and I'd like to go separates (DAC and separate streamer.) I'm planning getting a Holo May KTE DAC soon and am looking for a really good streamer but don't want to waste money on a screen. If Lumin had better software that's where I'd head. I know streamers matter- I have had a BS node, Lumin U1 mini, Lumin U1, Auralic Aries Mini, Auralic Aries G2.1.

Sorry to not be clearer earlier

I never understood the pricing structure of pure digital sources  beyond say a couple of grand USD.  I am an electrical engineer by training and can confirm that electronically, bits are bits.  

The power supply, DAC and analog stage do matter as it impacts sound quality.  But for source, I am thrilled with WiiM's