The only contrary report I’ve heard about Snell is that the EPS (expanded polystyrene) foam is more rigid to pass the multiple impact test. The jury was still out on whether or not this actually imparted more shock to the skull than a standard DOT-only certified helmet, as far as I remember.
I went with the mid-range Arai. It was a pretty penny, but I will say that the Snell certification might’ve helped out. I took two impacts on the head was completely fine. I mean, I’m crazy, but that’s another story .
Get what fits, what’s most comfortable and try to get it in a bright solid color. Solid white or neon orange is the best. Makes you easier to see.