-
8-1 & 8-2: The negative space around the "O" seems too open compared to the tightness of the rest of the logotype. Perhaps open some of that space up, such as in "citi."
However, this space doesn't seem as bothersome on 8-3 because of the deletion of the ascender on the "l".
The most successful one, as-is, is 8-3. It just looks tighter, or more "locked" together than the other ones. I think it still has a city feel to it without being too bouncy on the top like the other two variations. Overall it sends a friendly, modern, and confident message to the consumers. Good job :)
// Maxim
