The c-Jays represent a new take on how to make a portable supra-aural headphone. The whole customizable aspect of them is definitely a plus and a fun thing to play around with. Personally I have fallen for the medium sized pads because they provide me with a good wearing comfort and sound quality. Jays are definitely on to something with their c-Jays, with a portable design that folds and even has great drivers to boot. Sound signature wise these are biased toward the analytical side which is alright by me, but some may want a warmer, lusher sound.
As a practical set of headphones made for the everyday commute these are pretty ideal. They are light, small, and foldable, how much more could one want.