I really like 3, maybe if you cropped a bit more of the right, just a little, it would be even better
Number 2, looks odd to me, like the foreground is out of focus
I like the clouds in number 1
1 doesn't do much for me.
2 would be good if there wasn't any people in it.
3 is pretty stellar.
Probably due to the vast distances, but there's a fair amount of haze that messed with your exposure. The colors seem (although 3 is decent) light and flat, which would be the biggest thing I would suggest you look at.