I've tested a lot of helmets over the years and the Vantage is the bee's knees. The split adjustable ventilation is killer. When hiking or walking around, open the vents for maximum air flow. You can close just the front and keep the back vents open or close it completely.
It's lightweight, comfortable, warm and accepts audio options in the zippered earpieces. Another bonus for Fall 2011, the adjustment goes to a Boa system for easy ratcheting and a snug fit on-the-fly.