We use Bose A20 headsets, Gallet LH250's fitted with CEP's and others modified with the Bose A20 system -- these are the most common in use here with 100+ pilots.
Of course there are one or two other types in use but the above have been adopted by the company as they seem to be the most effective.
It seems to be very much what suits the individual pilot, for me I use Gallet helmet with CEP's as I get better radio reception.
I would love to hear if there could be a system that incorporates CEP with the Bose ANR to get the best of both
Regards
Pv