Noise cancelling and celebrity-endorsed headphones are two of the biggest categories in big headphones. You can thank Beats for that, I suppose. In one hand, I've got the MDR-1RNC which apparently are not endorsed by the Republican National Committee. At least, I don't think. They've got digital noise cancelling (the headphones, not the Republicans) and some great design and build quality.In my other hand I've got the shiny MDR-X10's which are "unique and powerful headphones designed by Sony and Simon Cowell." Yeah, they're unique all right.Six ears give a listen to create one verdict (Well, OK, technically two verdicts).