On a plane, I double up. Either my Shure in-ear (noise-insolation) or my Bose QC30 in-ear (noise-cancellation) with my older Bose QC15 (noise-cancellation) over

On a plane, I double up. Either my Shure in-ear (noise-insolation) or my Bose QC30 in-ear (noise-cancellation) with my older Bose QC15 (noise-cancellation) over-ear on top. Seems to work really well for me. Obviously, if I have any music/film on then the in-ear are the ones plugged in. For my commute (train+tube/bus+walk) I use my Bose QC30. Full-on noise cancellation on the train/tube, then I dial it down to 50/50 on the noise passthrough when walking in London to avoid being crushed by a bus or cyclist. (And also in-ears are harder for moped based thieves to steal off your head)