I like Bluetooth quite a lot, but the default SBC codec that comes with A2DP isn’t all that great. Even FLAK gets recompressed in an obscure format at medium bitrate.

HD “standards” like… AptX(?) aren’t really a Bluetooth standard AFAIK but it runs over Bluetooth so if both devices support it, it works great.

Fun fact, them HD standards are so software based that I got support for three different HD standards when I changed OS.