I moved from the Ety's to the Bose QC20i's about 6 months ago. I think it comes down to how comfortable you can get from a fit and general tolerance perspective on the in-ears that require a proper seal. I struggled with more then an hour with the Ety's in where I think I can go much longer (and sleep better) with the Bose. I've been positively surprised by the battery life of the Bose also.