The first one looks a little off-center. I think it would be a better if it were more symetrical; maybe even in portrait orientation. Just a smidge underexposed; could use a little more detail in the buildings. I really like the subject!
The second one just doesn't do it for me. I (personally) don't find the subjest that interesting and maybe that is all. Other than that, it is okay to me.
I like number two, the "1/2" makes it interesting. I don't like the shadow across the middle of the number or how the oval is cut off on the left hand side. I would use a larger aperture, step back and zoom in. You will be able to shoot faster with a lower ISO and it will blur the background nicely.