My current headphones are Beyerdynamic DTX 800 (http://gadgets.softpedia.com/gadgets/Computer-Peripherals/The-Beyerdynamic-DTX-800-Headphones-7499.html), so mid range
I recently upgraded to the AKG K702 (http://www.akg.com/site/products/powerslave,id,1082,pid,1082,nodeid,2,_language,EN,view,specs.html) . Amazing sound but I can't use it for more than half and hour for comfort reasons. I don't know whether it is too large (I can't lie down or rest my head against my couch because the earpiece extends past behind my head) or because it is too heavy (235g vs. 190g). Personally I suspect its the size as how can 40g cause neckpain!
Now I am looking at a higher end headphones, around $200USD. I would like to try Sennheisers as I like warm sound, and so am looking at the HD558. It is however 250+ g, and I dont know about its size. How big is it relative to the AKG k702?
Also, can someone please recommend me other full size headphones that are smaller? I had a look at the portable headphone shootout here at head-fi. Those would suit but I would prefer an open one, plus I would rather not pay for portability when I dont use it!