To add a couple of questions to this:

Do Meridian write their own firmware for the ROM drive?

What about region encoding - don't PC ROM drives limit you to 5 changes of region?

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).