Recently I bought this HP in Ampa Skywalk - HP zone. I tried both ATH-M50x & DT 770 Pro and found 770 Pro clearly wins in comfort factor, even though , it has a slightly colored sound, i picked this up. The only issue is, couldn't wear for long, due to sweat. I believe this can be resolved by replacing to velour pads.

DT770 PRO are my favourite studio headphone. I am using it for past decade or so. Each time I buy one pair of these headphone, it will last for atleast 7 to 8 years. And this my 4th DT770 PRO and 2nd of 250 Ohms model. I prefer to 250 Ohms or 80 Ohms because my purpose is to use it in my home studio to perform some playback and mixing of recordings with my mixer and amp. Even for daily use, these headphone will serve you for several years. If stored in a proper studio room without any rat problems these will never go off. The 250 ohms model has got velvet earcups that could absorb sweat, which might smell after some time. For me is not a problem as I use it in Air Conditioned room. Coming to the sound quality, if you use it with your mobile I would suggest to have an amp (particularly for 80 or 250 ohms) as you would be able to feed the headphones the required sound power or else you will have a feeling of having a earring placed inside a container truck (depends on the mobile or player you use). You can also think of some software player with pre-amp effects like Neutron. If you are an audiophile and planning to use them inside your studio, you will be more than 100% satisfied on their sound they produce. They are more balanced with very little inclination towards bass and highlights the chills of treble a bit. But they are very minute to my knowledge. The natural reproduction will induce you to spend more time in your studio. Cristal clear crispy sound. The build quality of these headphone is amazing. It fell a lot of time in my studio and never had any problem using them back. Very sturdy.
Sound - 4.5/5
Built - 5/5
Value for money - 5/5
Accessories - 4/5 They are not meant for portable purpose. For Studio purpose it is enough a pouch and 6.35mm plug

Beyerdynamic - DT 770 PRO

Beyerdynamic - DT 770 PRO

I narrowed down my choices to DT770 Pro and the ATH M50x and decided to go for the DT770 Pro 32 Ohm. This is one of the best sounding cans I've tried and for the price on HeadphoneZone its a killer deal. I've rediscovered songs I've been listening to. IMHO acoustic songs sound great on these. These are not very comfortable if you have slightly larger ears like me. I changed the earpads for a pair of Brainwavz HM5 velours and they are much more comfortable now, although the clamping force is still a bit too much for my liking. My only gripe is that there's no volume control on the cable and it comes with a flimsy cloth bag. Really, how much does it cost to give a hard carry case? The non-removable cable can be a deal-breaker for some but given that Beyerdynamics claims that all parts are replaceable, that shouldn't matter. Not that you'd have to worry about the cable ever, the build quality is that good.