You have already had an input on headsets . Do nt take anyones advice on headsets excepting for the clarity and perhaps their anr capabilities . Everyone is different and the worst thing that can happen to you is you buy a headset which clamps your head like a vice 30 minutes into your training flight , you will very quickly stop learning .
Try as many as you can and see what suits you personally . I originally bought a DC and its bloody awful and uncomfy I am now investing in bse .xIm mot sure transair would appreciate you turning up with a picnic and sittin in a corner of their shop wearing each of their headsets for an hour to get a proper feel for it , but that would give you a much better appreciation of how comfy it will be in the long term .
Most importantly ENJOY your training save the stress and anxiety for when you go commercial
Good Luck