I think the middle one is the most real. It also sounds the best. I like the groove and the singer a lot. I also think the sevenths and swung feel helps the piece. I think the last one sounds very childish. If that was your goal, good. If it wasn't, uh oh xD.
The vocals on the first two songs could be a bit louder, but other than that they all sound great! My favorite one's the second song. Keep it up, I can see you becoming a hit! :)