“Regret” is probably too strong a term, but I started with a Sonore microRendu to act as a Roon endpoint to my old Quad 44 preamp - and I couldn’t hear any difference between that and a Rpi3 with an iQaudIO HAT, so I sold the microRendu…
And now I just use an RPi4 + RoPieee with a USB connection to my Quad Artera Link, and enjoy the music.