I now have a proud collection of 4 headsets - 2 x DC H10-30's (very good all purpose passive units); 1 x Altronics C9070 (OK for basic use - pax); and the latest, a DC H10-13XL ENR - I wish for my ears sake I had bought these 20 years ago.......do yourselves a favour, find someone with a set, borrow them and see if you are not convinced.