The ATH-M50s is certainly a good headphone, but it has a relatively high clamping force so your ears will get hot (and begin to hurt) faster, this doesn't really matter all that much on a commute, but when watching movies and playing games it's annoying.
Are you going to use them mainly at home or are you gonna take them out on the street or both? If the former I would begin looking into open headphones such as the Sennheiser HD 558 or the 518, if the two latters there is the Denon AH-D1100 which is very comfortable, they are lighter and have more space for your ears than the M50's. Though the Technicas beats the Denons slightly in sound (it has a tighter bass and better mids) the Denons make up for it in wearability.
Others cans i recommend are the Ultrasone DJ1/HFI 580, also think the V-Moda M80 are great though i haven't heard them yet.