I purchased a pair of the QC35's from Best Buy and they are great. I think they are the best wireless noise cancelling headphone around. I tried Beats and I really wanted them to work but to much hissing can be heard when the volume is low. I used these on a 6 hr flight and they were awesome. The only problem I have is that they are not as comfortable as my QC15's. I also think the noise cancelling on the QC15 is slightly better. If you want wireless then go with the QC35. But if you don't want to spend $349 and are looking for something cheaper but just as good (wired), then I suggest you go with the QC15. You can get them from COSTCO approx $200.