Interesting reading as I was just about to order a C4. Tried one on in my normal size a 61 and it felt to tight, went the next size up a 63, to big. Decided I would probably go for the 61 and hope it would bed in, but at that price having read your review, I am going to have to think again. I really liked the idea of integrated comms but it's no good if it is uncomfortable.
I did try the E1 on while I was in the shop, that felt really comfortable, perhaps that's the way to go, and sort out a suitable comms system. Just a thought, I wonder if Schuberth will bring integrated comms into the E1 eventually?
Thanks for the review, you might have saved me a lot of disappointment and money.