Had the Smith Maze, its a good helmet but I feel like in terms of durability and protection there are better out there. Super lightweight and comfy though, easy to forget you're wearing a helmet. Also really good helmet/goggle interface.
Also had the Red Mutiny. Not my cup of tea. No vents so you are drenched in sweat, plus the foam protective layer wasn't very well secured to the actual hard shell which made it rattle around while riding.
I'm going to try the Pro-tec b2 this year. Size up for sure. Little heavier, but the big selling point for me is the SXP multiple impact liner. Don't have to replace this thing every time you knock your noggin.