Summer uniform: Which would you pick?

Last summer, my summer uniform was a sweatshirt dress, which I wore on bike rides, to work meetings and out to dinners with Alex. For this summer, here are three more effortless dresses for everyday adventures. Let's go pretend shopping...
A grey tankdress with a slit to the knee.
An afternoon dress for a pop of red (with a cute zip pouch).
A breezy striped shiftdress. (I LOVE this one.)

Just for fun: Which of these summer uniforms would you pick? Which suits your personality best? I love that these dresses are feminine but tomboy-ish at the same time.

P.S. I'd wear them with my trusty wedges, but flat sandals would be cute, too.