Noise-cancelling headphones are popular among business travelers, those in loud, open office spaces, and frequent commuters for a reason: they make life just a little bit less stressful.
Audio A reasonably bass-forward profile with balanced mids and highs make the 85h noticeably different than Bose's headphones; and I think they're just more pleasant to listen to; Battery Jabra rates the 85h for 36 hours of music playback with ANC turned on; and I've had no reason to doubt it.
Weight The 85h have a larger battery and substantially sturdier headband than most wireless headphones; so they're pretty bulky (though I never found them uncomfortable); Price; again $300 is a lot of dough for most people to drop on headphones; and cheaper ANC over-ears do exist; Limited Assistant...