So far, I love them. Not only are they comfortable, the noise cancellation is probably the best I've ever experienced, especially for the price. Even with nothing actually playing I could hardly hear anything around me. Audio quality is definitely above average, and after playing with the equalizer on my phone a bit these easily sound better than my buddies $100+ Beats. I tested how comfortable they were last night, I wore them for almost 4 hours straight and my ears were hardly sore like they would be w/ normal ear buds after 20 minutes. It also comes with 3 sizes of ear buds, so I put on the largest one and yeah...easily top 3 best headphones I've ever had, and for only $18...
My only regret is I just checked again and now they have this black version for $20 that I really like! That wasn't there when I bought mine...oh well, maybe in the future, I still highly recommend these!