Chime by Fanny Billingsley
I wasn't a huge fan of the first cover, but the second looks self-published. Also, that shade of green looks awful against her pale face!
The Age of Miracles by Karen Thompson Walker
I really liked the first cover, which is the one that's on my ARC. It's fairly simple, but different from a lot of other YA covers and pretty in its simplicity. The second cover, though, seems like it would better fit a mystery or thriller, though the houses pictured in the light suit the setting of the book.
What do you think?