#3 is one of my favorites so far. The others are all good but have an issue with each: #5 - please no checkmarks and no taglines, #2 - I like the grey letter "r" but the dot breaks it up in a weird way. Also could use two colors on fin and mark.
updated #23 #24 (hidden arrow) #25 (if you see, it's a "face" shape with r as a nose and dot as an eye :) #26, #27 #28 with negative letters Please feel free to give the feedback or suggestions.