I've been using the lightspeed QFR
for three years in the J-32 and they
rock...better audio quality than DC
(I was a hardcore DC fan) and they
were only $275. 2 AA batts go about
a month, even leaving them on overnight
a few times...(don't have auto shutoff).
They are lightweight, and have wire
connection between the cups that looks
too flimsy to hold up, but again, I have
worn 'em three years (better than 2000
hours) in the junkstream with no problems.
I think that the best thing about anr is that
you can run the IC/radio volumes at lower
levels, not overdriving the headset
speakers for even less noise in the
headset. They have been exposed to
temps ranging from -14 to 119, with no
problems.
Bottom line...probably the best ANR value
out there!