I've always had problems getting into Black Metal. For me it's always been the more screeching type of vocals that throws me off each time. I love me some growls and grunts and shit, but it just doesn't work for me. I usually crank some Deafheaven for my light Black Metal fix (which isn't "brutal" enough I know). Occasionally some Emperor and Ihsahn (I like his solo stuff).
Good call on Japan. I haven't gotten into them that much myself but I'm familiar with their keyboardist Richard Barbieri through Porcupine Tree and his solo work. Mick Karn was a pretty mean bassist as well.
Post-Rock is my jam. Cranking on some new This Will Destroy You among others and eagerly awaiting new Jakob. GY!BE is a favorite and I love how overindulgent they get. Though I may be in a minority when I say that their latest didn't exactly do that much for me. Music is always awesome to read about and discuss, so keep the jams coming duder.