This is my 2nd Air Classics HS1-A headset and I love them both. The headset fits great with the adjustable headband, the gel ear seals work very well even over my glasses and even my teenage daughter doesn't complain about the pressure of the headset.
Best of all, the audio quality is excellent. The mono/stereo switch helps as do the dual volume controls which are, conveniently, located on each earpiece.
I also love the fact that ASA backs this up with a lifetime warranty!