Hi Biggles
As a student myself, I've just purchased an Altronic C9073 (the bendy one). Have only had one hours use but found it quite good so far, slightly more comfortable and quieter than the very very used David Clarke flying school set I've been using. Given my instructor uses a C9070, I figured the Altronic would be more than adequate whilst training.
Down the track I might get an ANR and keep the Altronic as a passenger/spare. But for now, I'll put the extra investment into my flight training. Good luck finding the right set for you. Keep us posted on what you decide.
Nev