#8 i like the colorfulness of it but the circle looks a little to much like an eyeball. #9 looks good but i am not confident that the O in moves will copy well
i can also make the circle hollow in #8 and make it look like a wheel, the lightrays giving the illusion of spokes in a wheel. and in #10 i can also add a sky if you want. let me know if there are any other changes you want, your feedback is very much appreciated.