1. STG for the win
My head measures 59", I ordered size L and it fits kinda snug, but I suspect will break in a bit. So light(!), and right now very warm with the chin curtain. It is also the quietest helmet I own, and I have a few (Schuberth C4, HJC RPHA 11, Arai Vector 2, Scorpion EXO AT950). This thing is plush.
Also, I gotta give Van credit. I appreciate his informative video-reviews, as well as his diligent, very honest answers to all of the questions in the youtube comments section below them. This is in stark contrast to watching Rev****'s greasy sales pitches that sound like you're in a strip club. He'll actually tell you his opinion about what he thinks is better from his experience, not just deflect the question so as to not potentially alienate a product manufacturer. This helped seal the deal for me deciding on the Shoei RF1200, and I am NOT disappointed. Also, STG is not a mega-corporation, but is a family-owned and run biz, in the badass state of Michigan. Whenever they have what I need (because they carefully choose what they stock), I'll be shopping here going forward.