These are among the best Bluetooth headphones ever made, and are a great option if you want solid sound without wires -- but you'll pay a high price for the privilege. As Inner Fidelity points out, good Bluetooth headphones are "few and far between, in my experience, and the good ones are brutally expensive." IF calls the UE9000 "a pretty terrific compromise" with "very, very good" sound in wired mode, and "the best I've heard to date" over Bluetooth. Sound and Vision said there's "room for improvement," in part due to the fact that the noise-canceling features can't be turned off in Bluetooth Mode. S+V did, however, call the UE 9000 "a good headphone, overall."