I went to an Apple store during lunch today and tried Bose QC15 and Beats Studio. No question Bose QC15 provides excellent sound isolation. IMO it also has very good sound quality. On the other hand, the Beats Studio sounds crap in general.
BTW, my fortune cookie from lunch says "You are attracted to things with an exotic flavor". What the hell does it mean? Does it mean my IE80 has an exotic flavor? LOL.