I recently bought a Brooks running skort; it's shorter and has a shorter short underneath than the Athleta one I have, but it fits really well. It looked teeny when I took it out of the package, but it fits. It's cooler, as in good for hot weather.
Ugh, the Terry flare skort: I bought one for riding/errands and it just was wrong. I love the wide, low waist panel, but it just didn't fit right. And the skirt itself was huge on me, in an xsmall. I felt like it made me look huge, probably because it was too big in my normal size. I returned it.