I wrote the Darko review. I still have the S2 Stream Ultra, it’s very good. If space is an issue it’s delightfully small too, supposedly not needing an external power supply (I haven’t tried as its an uncommon 18V).
I also have an Allo DigiOne Sig and USBridge Sig, together with a Shanti. I reviewed the latter, with Shanti it’s very similar to the Stream Ultra. Just bigger, two boxes etc. But you save a bit. I haven’t compared the Allo DigiOne to the Stream Ultra.
Or there’s an RPI4 with decent power supply - go for the iFi 5V supply and you’re looking at £100 all in. It’s surprisingly good, albeit I think the Hugo TT will merit more (I haven’t heard it).
And if there’s room on your crdit card still there’s always the dCS Network Bridge. Delightful! Or the standalone Moon Mind 2 device - the same platform as installed in the Moon 390 I looked at. Again very good.
Hope this helps