Rocker is a excellent helmet choice
My experience with the Sweet Rocker is that it was very easy to get an excellent fit, it is very lightweight, and the protection is about as good as it gets. I have taken a few very hard shots with it and barely flet like my bell was rung, whereas in my old helmet I would probably have been seeing stars and had a massive headache if not worse. For example, I took one shot where my head hit the rock first then the back of my shoulder blade impacted the same rock. Rolled up and my head felt fine within a second or two. My shoulder blade, which received the lesser impact, was sore a week later.
Definitely check one out and, if it is a good fit for your head, you won't be going wrong.
"It's All Good"