Just bought a Spesh Deviant II as there is nothing else on the market that can match its ventilation/protection ratio. I was at the LBS to pick up some bearings for my rear hub and saw they had two deviants left so I tried on the large which was not a perfect fit (just a bit loose, but only by a hair) but a custom job can fix that. I was breathing really hard, harder than I would on the trail, and had zero breath back. I bought it right there on the spot despite the fact I was supposed to be Xmas shopping for my wife,lol.
The mat black looks sweet.

Edit; the other helmet was a medium which I couldn't even fit it half way onto my head so if you can find a deviant make sure to try it on first.