This is a comments thread for the following album: https://downloads.khinsider.com/game-soundtracks/album/game-sound-museum-famicom-ban-sp-disk-writer
Half of the music I listen to are FM / PSG, and they always sound better without reverb.FM / PSG is too harsh, so reverb / chorus is necessary.
This is personal preference, but FM needs post processing to take off the harshness and introduce softness and richness. When I play keyboard, I always add post processing to FM.Half of the music I listen to are FM / PSG, and they always sound better without reverb.