Looking for best streamer without DAC under $3500

My 2 cents......

Simaudio Moon Mind 2

https://simaudio.com/en/product/mind2-network-player/?v=7516fd43adaa

or

Bryston BDP-3

https://bryston.com/digital-audio/bdp3/

These retail at around 4K, but you can find them in your price range from several retailers.
I am currently using the Bryston (connected with AES). You can also find some pretty good deals on used v1 and v2 from time to time. I absolutely love the thing.  I also use Roon exclusively, so I can't speak to usefulness of the the Moon or Bryston app.

I have heard and liked the LUMIN U1 mini, I also love the look of it, my only issue with it was the switched power supply, so I never went down that road.

@rbstenho, what setup did you go to that utilizes I2S? I have a terminator with I2S and am looking for a streamer that utilizes I2S.

+1 rbstehno

Magna Mano Ultra i2s into DirectStream DAC.
You can run any music service you want.
If you just want to add Spotify a Blu N100 toslink out for $300 is plenty. Just ignore the WiFi and built in DAC - both shitty.

Have a look at the Antipodes range.
The onboard DAC is pretty good although you’ve said you don’t need it. I don’t use it but it’s there if required.
Prices are NZ dollars so the US exchange rate makes them very attractive.
Their after sales service/support is brilliant

Stream with computer and good dac via hdmi
Or usb is fine both have way more bandwidth than any hi res file can throw at them