I can't pick between dragonflies and the flying bee. Really like the rust train. Love the composition of Winter Break, but not sure if it's really a "best"?
As for the people, I would vote for Fuss.
For the photo of UHS, can you crop off some of the bottom and allow for more room at the top-it's a lovely photo, I just think it's a little too close to the middle and not on either a top or bottom horizon line.
I also really like the tree row.
Hope that's somewhat helpful.