The Cascade M11 Pro helmet is the best helmet I've ever used. While wearing it, it has the same super-comfortable feel as those old Teemu Selanne Joffa helmets, just without looking like you have a fishbowl on your head. Cascade did a really great job streamlining the design of the helmet. This looks so much sleeker and cooler than the normal Cascade M11, and for a lot of people that holds them back from buying.
I love wearing a helmet that has zero pressure points, doesn't squeeze or pinch any part of the head. The size is adjusted from the back of the helmet by tightening or loosening a band that wraps around the helmet, giving you a perfect anatomical fit without any discomfort.
Having the helmet adjustable in this way also allows Cascade to make the helmet one solid piece, as opposed to virtually all other helmets with are two pieces. This increases the durability and protectiveness a lot.
As far as I'm concerned, the M11 Pro and the Bauer Re-Akt are the two best helmets on the market, but the M11 has the advantage of being $50 cheaper and in my opinion looks better too.