Of the first round of 7, this is the entry that I like the best.
The actual letters inside the circle I dislike, but overall I think the more graphical display of the AB over to the left is what makes this one my top pick so far. Not sure about the circle, but it is the furthest away from the plain text that we have been using to date.
An excellent submission for so soon in this process. Thank you! I hope to see some more of your ideas.