Thanks, Franco - that clarifies how much venting there still is when you need it most. I fully agree with you about people creating their own problems by buttoning up when they don't have to, and creating sweatboxes needlessly - see my story above about my niece and brother.

I'd probably be in a TarpTent (the Rainbow) except for one thing: on an 80 degree/90 percent humidity night like we get in Ohio in August, I want all the ventilation I can get. Thus my choice of the Carbon Reflex 1. I use the rainfly only under two conditions: it's actually raining, or it's really, really cold (below freezing.) On a clear night, it's mesh only - like sleeping under the stars, which I really love (thanks to Colin Fletcher and no money for a tent way back when), but no bugs.