Working at the base of a mountain in a hospital and living slopeside with plenty of varying degrees of skilled friends so I think I probably have a pretty decent amount of knowledge on the subject of concussions and brain injury in general. Friends/riding acquaintances
range from beginner to full on pro riders.
Sure freak accidents happen and you slam hard. This shouldn't happen numerous times a season. Given the circles of people I've rolled through have been up to pro freeride tour guys and pro pipe/slope guys I would have to say that they definitely push it. They all wear pretty basic helmets or no helmets. I might know one or two a season at the advanced to pro level riders than get a good head hit. I have treated and known hundreds of beginner to advanced intermediate people get concussions because they think they are better than they are and go too big or miscalculated something that made them lose their proper edge hold.
Sure, a helmet helps you but, not one single helmet can keep you from getting a concussion from a fall with a speed of impact that happens once your off the learning curve. Skill is greater than equipment, ALWAYS. Go buy your 400 helmet and it will definitely help but riding like a fool will blow right through the padding and your brain will still slap your skull.
I'm not saying that you shouldn't wear a helmet. You should, maybe some body armor, it keeps the bumps and bruises down for sure. I'm saying that a better investment is in taking time to advance is going to be way more helpful in the long run.
Most Denver people put down 30 to 50 days a year if they are dedicated. I'm guessing that is alot more mountain time than your used to. Just take a step back and progress a little slower because big progression attempts are what gives you the worst of your wipe outs.
Baby jumps, small jumps, big jumps, real big jumps. 180, 360, 5, 7, 9, 10, 12..... Ride on box, ride on rail, small jump on, full on urban...