The AKG K812 is just as comfortable. It has some of the characteristics as the HD800s with a more bass, musical sound and can be worn all day.Is there any headphone which is as comfortable as HD800S? One of the best things about it is that you can put them on for a long time and you won’t even feel anything. The pads, the headband, the negligible clamping force, everything is so comfortable. Weighs nearly 330gms. Something good in this weight range is rare to find.
Keep an open mind, because these are a very underrated headphone. Although they are easy to drive, with proper amplification they can be a real treat to listen too.