So far my top picks are entry #5 and #4. Maybe something a little less bubbly in the fonts. I think the arrow in the "o" is a good concept I just don't like how the "O" is not clear and can easily be confused with a "Q" at a quick glance.
Can you also try one this way (with the arrow inside) with the bubbly look. The more i look at it the more I kind of like it with the bubbly letters lol.