I have Arai's, Shoei's, Scorpion, HJC's, Suomy's and a Bell star carbon. The Bell is noisy as hell. The Aria's move the most air. The HJC (RPHA & RPS) are decent but have a narrow head opening. The Suomy's are heavy and don't move a ton of air (very round shape). The Shoei X12 is by the...