The new Aurelic S1 for $2 to $3k looks interesting, though it does not support fibre optic.
AURALiC introducing new S1 streamer, updated ALTAIR G2.2 and V10 softw - AURALIC
I would still get something from Sonore., who have many fibre streaming options.
Small Green Computer brings your entire music collection to life
The Lumin streamers are good. I had the $15k X1 but the much cheaper Sonore OpticalRendu was comparable. They sounded different and both were good. I kept the Sonore opticalRendu.