I agree with Piston Broke, the normal Pilot headsets are totally useless, however the ANR 17 -79 are very good.
They are around the £350 mark which seems alot of money, but having spoken to afew people that on the edge of the CAA limits regarding hearing loss, if they help in any way it`s worth it.
Peltor make a very good headset. I have owned a set for the last 5 years and they have been very reliable. They also had ANR headsets which they have taken of the market.
I`m afraid the Peltors have been left at home once I`d tried the Pilot ANR`s. (with the metal headband)