Entry #42 & 43, I really like where you're going with the logo. I like the graphics of the houses/buildings, but it needs more color and spunk. If you fix it up just right, you may be in first place.
Entry #43 has the most potential, the design doesn't completely satisfy me yet. But you are on the right track, I like the futuristic design very much: just add some more graphics, maybe add some color, and more fashionable.