I have an exo 500. Good air flow. Visor shuts tight. Air pump is a waste IMO. Fit, weight are good, not great. Aesthetics could be better (they are rather round).
Overall, Scorpion makes a really good product for the price range. I don't think you'll find a better bang for your buck helmet around.
You won't feel like crying when it scratches, whether it's rocks pelting you on the highway or an accidental drop of the helmet. I've tried a few SHOEIS all of which fit me better and were lighter, but I can't justify the insanely high price point to actually purchase one yet. Maybe at some point later on. For now, the Scorpion does the job.