I like your Entry
#11 with the target in the O instead of the Zero. I believe the target you used in Entry
#2 is cleaner and not as busy/cluttered (when I go to have it placed on a shirt).
Can you try a couple with "610" above "Precision" with the 610 "left justified" with the 6 above the P. And I think I like the numbers and characters all the same height.
Can you also try a few with a white background too please.
Thanks! Great job!