Seems like retro consoles look better on 15khz CRTs while retro computers feel upgraded but still "authentic" on 31khz CRTs. 31khz seems like a balance between too artificial but clearer flat panels
From PC VGA to 15kHz CRT BNC YPbPr : r/crtgaming
I confirmed my professional CRT monitor doesn't take the old console signals. Would anyone recommend using an arcade 15kHz RGB to VGA board? : r/crtgaming