Noise cancelling works best on steady sounds: engines, fans, traffic hum.
Over-ear or earbuds?
Over-ear headphones block more sound and last longer; earbuds fit in a pocket and suit workouts.
Battery
Look at the figure with noise cancelling on. Thirty hours covers a week of commutes.
Multipoint
If you switch between a laptop and a phone, multipoint saves you re-pairing all day.
Fit
A good seal matters more than the electronics. Try every ear-tip size.
