hi there concordino,
i started off with david clark h-13.4,but was amazed with the anr when a friend demonstrated his lightspeed model..
i ordered my own lightspeed anr's almost the next day and havent looked back.since these headset comes with audio/cellular interphase with "auto mute" which works quite well on long haul flights and with auto mute u never miss a clearance either..
keep it up there fellows
no more 406pilot
ps:tried the bose x aswell looks quite good but apart from the extra price i didnt see much difference on the active noise cancelling properties.