I like the idea of #7 because the letters are thicker but I maybe making the smile and the G the same color so you get the idea of a G a little more. Also maybe adding braces to the smile. I like the colors though.
I like #24 but people are saying maybe it looks a little juvenile and wouldnt necessarily appeal to an adult crowd. Not sure how if or how you can make it more universal but would love for you to give it a shot! Thanks!