Active Noise Cancellation headphones tend to distort the sound or have a less high quality sound to them,
I would get the Hp 100 over the K550 simple due to the Hard Case and ease of use that comes with the HP 100, and if you want more bass get something like a Fiio E11, the CoP doesn't have the quality the K550 and HP 100 do,
So you would say just buy the SoundMagic HP 100 over the AKG K550? :) Then Will probably just buy these. But one more questions. Do you have any other headphones you can recommend apart from the HP 100 and the SRH 840 headphones?
Thanks for your effort. :D