I really, really like my Halos. Flew 6 hours down to Sun-n-Fun, with a fuel stop in S. GA. while waiting for the airshow to end. Made it home in 5 with no discomfort in either direction. They were a Christmas present to myself, and that was the first long trip using them.
They were so much nicer than my old clamp set that I looked up their booth and thanked Dr. Phil personally. Never can remember his last name, but it's on the card in the leather case back on the hatrack in case I ever need it. [McCandless?]
The headset also worked well plugged into my handheld radio so I could run the tractor up and down the edge of the runway on a not-very-busy evening after work. Our county-owned airport gets zero assistance from the county [can't even get them to spend the free FAA money, sometimes], and I feel better mowing near movement areas when I can listen in.
This little headset allows wearing any hat you want, and what I like to wear and can now fly with, is a nice wide-brim western hat. With a ball cap, I don't have to worry about pushing the hat/headset around to miss the button, and buttonless hats are really difficult to find anywhere but Sportys.
Pricing is about the same as David Clark H13's, both are stereo, Halo's come with a case. Last year the Halo's were on sale in Nov/Dec, check the website: www.quiettechnoligies.com