I thought post-black metal was that Norwegian stuff influenced by prog rock and electronic music, like Solefald, Arcturus, later Dødheimsgard, Ved Buens Ende, etc. I mean, I don't particularly care for any of those bands eiither (aside from the first and third Arcturus albums, the first Solefald album, and some Ved Buens Ende stuff, which is interesting from a prog rock standpoint, if not a black metal one), but it's definitely all way better than these American (and lately, European) indie rock bands masquerading as black metal. I guess that's part of why Wolves in the Throne Room and other bands like them suck so much; they couldn't even pick an original name for their bullshit!
I wouldn't lump Negură Bunget in with either of those crowds (at least not their pre-reunification material); they wrote some pretty great music in their prime. I recall Om getting a lot of positive press here back in the Radio Nihil days. That album is cool (songs like "Înarborat" display an interesting fusion of early At the Gates-style dissonant polyphony and consonant melodic black metal, and stuff like "Țesarul de Lumini" does a really great job of showing how one can use lead guitar as an orchestral layer rather than something that grinds the song to a halt), but if you ask me, Măiestrit is their best. It's interesting to hear a band build on the unmistakable riffing style of De Mysteriis Dom. Sathanas and not go in an industrial direction like Thorns and Blut aus Nord (whom I also like); Măiestrit uses weird bendy riffs in the context of a dark folkloric atmosphere (with some really tasteful keyboard usage), and it works really well.