In a previous article, "RST Engineering" said:
We gave them the "best of the new stuff at Oshkosh" award at our forum this
year. Very impressive. I did a quick google and didn't come up with any
other in-ears, although I saw another one at the show that didn't have quite
the attenuation numbers of the Clarity.

There are three in-ears that I know of:
Clarity Aloft
Lightspeed Mach 1
Quiet Technologies HALO

I have the HALO, which are about $100 cheaper than the others, and while I
wear it in preference to my Dave Clarks with the Headsets Inc ANR kit
because they're quieter and more comfortable, it has a few annoyances:
- The microphone isn't very good. I frequently have to made sure it's
pointing EXACTLY the right way or ATC complains they can't hear me at
all.
- The web site doesn't give you any way to order replacement ear plugs.
Fortunately, the plugs are from audiologist equipment (E.A.R. Link), and
I managed to order a huge supply of them off eBay from "audimetrics
califormia" for $25.
If I had to do it again, I'd probably buy one of the other brands.

--
Paul Tomblin http://blog.xcski.com/
Contracting is a good, even honourable, way to earn a living, as long as
one hides the secret that it's possible to pave one's patio with
gold bars. -- Dave, ex-BA