I started out with the flying school peltors and had great difficulty with the radio work, I borrowed a steinheiser ANR set and what a difference I could all of a sudden understand what was being said.
After much research I bought a pair of Lightspeed 30-3G which are brilliant BUT I have susequently had the opportunity to use the Bose X for a couple of flights and I shall now be buying 2 sets of the Bose (1 for me and 1 for my wife) just as soon as I have saved up enough money. The Lightspeeds are superior to anything else I have tried except the Bose X which beat them hands down on everything except price!
Hope my experience is helpful.
Nigel