I hear some great sounding AM stations, mainly on the night airwaves, like 650 WSM Nashville, 1520 WWKB Buffalo, WJR from Detroit at 760 and CFZM 740 is pretty clean too.
Locally no one is that good with their all-around sound. Some are good to downright bad and telephonic. Others have settings for crisp voice, but when music comes on, it sounds chewed up. A couple of stations have a strong noise gate, and everything sounds modulated.
Booma