Well, that's exactly both your statements.
Like Jerg said, it's actually much closer to the HE-6 in terms of overall sound performance while being 1) marginally heavier than the 4s, 2) much lighter than the 6s 3) more comfy than either, by a good margin.
Funny story: when I put my HE-6 back on my head yesterday - after 10 days spent with the 560s - I immediately noticed the headband on top of my head for few minutes. I had no issue with that before...
Thank you for you kind reply, appreciated.