Do you want a noise cancelling phone or an open back that leaks sound a little.?
I think by far the best I've used are the Beyer Dynamic dt990 pro open back phones. I find the 770,s close back design make the bass a bit boomy as there bass heavy anyways, great for sound cancelling in a studio, industry standard monitors since the 80,s and are pretry amazing sounding. I will probably never use another headphone other than the 990,s they are just superb. Whatever you do, don't buy Beats by DR Dre. They are over priced fashion headphones, nothing to do with studio/instrument monitoring etc. Skull candy also for me are not great.Haven't tried the Audio Techs but I've heard they are really great.