I've narrowed my search down to these 2 pairs and I feel like the last factor has come down to aesthetics. I've heard you look ridiculous wearing the K271's due to their massive size, even though I prefer the look in terms of the headphone alone. The ATH-M50s look rather lackluster by themselves but it might make up for it by being smaller when being worn.
Unfortunately, my google images searches were rather unfruitful and I have almost no references of how either look on someone's head. Would anyone mind taking a picture of themselves while wearing either set? Or if you aren't too comfortable splashing your face on head-fi maybe just your own opinion of how you look with either one on.