Hershey’s (and most other American chocolate) is absolutely fucking awful. It tastes like puke.

Cadbury’s used to be good until Kraft bought them and fucked up their ingredients to increase their profits by 0.1%

Pretty much any European brand is decent - Swiss, German, French, Belgian, Italian. British chocolate used to be good but is mostly pretty average now. Apparently South America has some good stuff but I haven’t tried it.