Just picked up an Aerostich Roadcrafter (a new R3) after having my riding buddies swear over it like fanatics. Have run in my first 500 miles (much of it in 104+ degree weather) and I can say this so far: they weren't kidding! This thing vents like a mutha****, goes on and off easy, and allows me to wear lightweight, breathable street clothes underneath. Between the Madstad and the hand wings, there was a good amount of airflow; then when I stood up on the pegs it was like somebody was pumping air conditioning into my suit! Here's a pick:

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For the bandana & leather vest crowd: this probably isn't for you.

For everybody else, this is a serious pro-level piece of kit. Consider it if you're in the market for full protection riding gear.