@frans I’m guessing the reason you’re not getting a lot of responses is that most of us use our headphones for stereo, and speakers for multi-channel. I don’t know of any headphones that are excellent for both.
For instance, this review by @Dynamic shows that he’s keeping the Mobius for specific reasons, but prefers something else for everyday listening. This review by @TylersEclectic says the Mobius is OK for music but he raves about using it for PC gaming.