Headset
I have used the Sennheiser HMEC 45 KA for the past eight years or so and have been very satisfied.
It has the noise cancellation technology that drops the background noise by a few decibles. I wear it with the outboard ear covered. When I encounter loud airnoise, like at at low altidues and high IAS, or just a weak controller radio, I slip the second earpiece onto the ear.
This model has flat fabric covered "pads" that go on each ear.
Before settling on this model, I test-used the more cup-like version from Sennheiser. It made my ears sweat and I was not able to hear my partner when the second cup was over the inboard ear.
The Sennheiser HMEC 45 KA was great for me on the B737, A320, and A330. However, I am now flying a B757 & B767 that generates an increasingly annoying hum when I lean forward. I suspect the windshield heat or the old technology CRTs.
I am shopping for a new headset that does not have this hum issue.
I worked closley with the Sennheiser sales rep eight years ago. He made a summary statement that headsets had a lot of personal preference involved.
Good luck on finding a good choice. If anyone has suggestions for B767 use, I am eager to find a good headset, my ears are ringing after a pair of 3-4 hour flights!
R