Once I replaced my David Clark (non ANR) with Lightspeeds, I never looked back
because the sound reduction was so great. However, clamping pressure remained ,
especially on a long trip. I treis my friend's Bose and liked them, but not
enough to dump the Lightspeeds and the clamping pressure wasn't much better.
Somewher I read a reference to Auricomm (QuietTechnologies.com. These are very
similar to a cell phone headset and weigh about as much . Brought them as a
Christmas present to myself ($350.00) and LOVE them. Just took a trip from Long
Island to Houston & back with no complaints.
Maybe not to everyone's taste but certainly worth loking at at an alternative.

John

It was Aviation Consumer that did an article on them last February