Also try the DC10-13.4x.(the ANR ones)
I tried a pair on a trial basis for 30 days but was not totally convinced about the ANR bit (all it seemed to do was remove a bit of low level thrum).
Anyway I was too lazy to take them back and change them for the 10-13.4 and have used them regularly for 3 months. Last week the battery went flat and I had to do a whole day with just passive attenuation. I had to turn the earphone cups from min to max volume to hear the ATC and intercom and that thrum was quite annoying by the end of the day. That was when I realised how much of a difference they made.
Its pricey but in 20 years time you will gladly pay £200 to get the hearing back you lost spending 1000 hours in spamcans.