- good aerodynamics, seems just as good or better compared to the Giro Air Attack (I've ridden both extensively)
- good cooling, a little (but not a lot) better than the air attack
- significantly better looking than the air attack, in my opinion
- catches bees in the helmet over 10x more frequently than the air attack, get stung in the head about once every two or three rides (>150km) during the summer
- strap clip (I think they are called strap dividers) broke spontaneously, I substituted a heavy rubber band meant for mounting a bike computer that seems to work well, actually better than the fancy clip. I hope it's not meant to be functional in the event of a crash (though the clips are clearly brittle and flimsy so I'm guessing they are meant to break off in the event of an impact).
- much less comfortable than the air attack, presses against forehead due to minimal padding vs the air attack that has a terrific suspension system that holds the shell away from the head. My head circumference is 58.7cm and I wear a Medium in both helmets.
- because it holds the foam pressed so close to the skin on the forehead, it leaves tan marks that are exactly shaped like the front openings of the helmet, these marks make you look a bit like a klingon when off the bike and are basically permanent throughout the summer. The correct solution of course is to spend as much time on the bike wearing the helmet as possible so that nobody will notice.
This review is based on 10000km+ on both this helmet and the Air Attack. In spite of the negatives with this helmet, I continue to use both helmets quite extensively. I choose the air attack in cold/rain/snow/sleet and the Garneau Course in high heat and sun particularly above 30C (my air attack is black and my course is white which also affects this choice).