I've bought the headphones and I'm happy with the product except for one thing: the very disruptive sidetone that picks up mic noise and sends it back to me. (Why would I ever want that? I don't need to hear myself; I'm using an external mic just so that I can keep the QC 35 on ANC and have no sidetone.)
This product is very good, but it needs an option to disable sidetone in the next firmware. I'm not convinced a "low sidetone" would be good for everyone; I need zero sidetone.