To the OP - The Limetree bridge you are considering I don’t think is USB. I’d consider the two Roon ready (in case one day you might try Roon) commercial Raspberry Pi based models -
1, Stack Audio Link II
2. Pro-ject Stream Box S2 Ultra
or
3. SOtM ultra 200
The Pro-ject has Volumio software integrated into it, which is a decent interface for streaming services. All are less than $1000 in Europe.
I compared these three to the Auralic Aries G1 (an expensive bridge) and could not detect any difference in sound quality.
1, Stack Audio Link II
2. Pro-ject Stream Box S2 Ultra
or
3. SOtM ultra 200
The Pro-ject has Volumio software integrated into it, which is a decent interface for streaming services. All are less than $1000 in Europe.
I compared these three to the Auralic Aries G1 (an expensive bridge) and could not detect any difference in sound quality.