Same for me.ZMF copilot attached to the leather strap has been the most comfortable so far
I started with the VO Silk Wood, Magnesium chassis, leather headband and leather strap at about 425 gr. I then changed to the aluminium chassis because I did not like the paint peeling off and added the co-pilot over the leather band. So this added up to 500 gr but together with the suede pads it feels super comfortable and no problem at all. My HD 800s is significantly lighter but clearly less comfortable, specifically I don't like the headband which is too loose and has to be adjusted all the time.