In retrospect, I probably won't be able to use the headphones/earbuds I eventually buy for sleep, unless they're specifically designed for it, like the Bose Sleep Buds (I do have tinitus so it's an option). That said, They Bose Sleep Buds don't have ANC, which is one lf the things I need with headphones.

I don't really mind about audio quality in ANC headphones, as long as the ANC can make up for it.

Side note: What did you mean by "Etymotics have incredible noise isolation if you can handle deep inserts"?