My favorite was definitely Wildwood, though Situation Normal was a very close second. I loved the world, the Rangers, in Wildwood. Only the extraneous POVs bugged me, I feel they cluttered the story more than helped it. Situation Normal was hilarious and cute and extremely well done. Very vibrant characters. Ground Mission was also good, though it did not grab me as much. The podmate concept I did like, and the way they stuck with each other was <3. The only one I didn't really like was Dark Covenant, but that's not a slam on the story. It was as well written as everything else I've read by the author; the story just wasn't my cup of tea.
All in all, a good set of stories.