It irks me that I don't have an iPad - yet - and can't use Snapseed! My rationalizations continue and will, I am sure, win out!
Karen, my favorite - if I had to choose - would be your second for its seemingly 3D feeling but also for the inclusion of the person lost in thought and that chorus of flowers. Dramatic yet the details retained in the foreground's flowers created a counterpoint for the dark and deep horizon line.
Great images Karen. I'm with BB, because of its greater depth (due to the foreground's stronger subjects and an emphasis on the light tones) the second images just sings...and pops! Really nice B+W treatment also.