I have a huge head and run a Pacific Kevlar. They are very tough except the headband which I broke at the adjuster, but they replaced at no cost.
I haven't found them to be super comfortable because of the stud they run through the lid to catch the nylon chinstrap, it hit's you right in the back of the head. I reversed it and now it is fine.
I got the one with the brim thinking I could lean into the occasional vertical quick cut and take the top to the head and face with no reprocussions. It hasn't proven to be a worthwhile technique, lol.
I am looking at the Vertex now, then I can swap my muffs and have a lighter, more comfortable setup without the brim blocking my verticle sight line. One concern I have about them is they seem like weak plastic, but I won't know until I try. That's why I got the Pacific, you could take a tank head on and it would stay intact. The Pacific is heavy too.
Anyone want to tell me how tough the Vertex is?