I read a lot of complaints about the G35, i actually had it for a day and had to return it because of an issue i had with it and got it refunded.
I'm pretty sure my was faulty in some way, but besides that for some reason it really clamped my head a bit too tight, i also had trouble hearing my own voice when i talked over teamspeak, considering how it blocks sounds(which is usually good, but was bad in my case as i wasn't used to it and it was weird/wrong all over)
I don't know maybe it's just my own bad experience, as i do own a ton of Logitech products and love the brand in general