Cost is everyone's main concern when it comes to buying the products even if the most inexpensive product or service is the 1 with the even worse excellent. I know that I have purchased many numbers of low-priced headphones that only last me for a year or two. Both equally of these are the two pricey pieces of gear. The QC15 is about a hundred dollars more cost-effective than the MB, and they are effectively well worth the price.