Kev,
The Tiger Club were always fairly traditional and used RAF type cloth helmets and Oxy masks/mics in their Tiger Moths. They've become all 'modern' recently and now the aeroplanes are configured for 'modern' headsets. Noise attenuation is paramount, but not too much that you can't hear subtle changes in the engine note.
I use a DC headset in a leather helmet in both aircraft now. When flying the Turb, I have an ANR system attached and just hope the battery doesn't run out mid flight ;-) Years of flying open cockpit aeroplanes, sometimes with no earplugs or helmet, has certainly affected my hearing
So a
good set of noise attenuating headsets in a cloth or leather helmet will be adequate.
PS The Tiger Club's radios have always been crap.....