Yonman,
I like what you've done.... we'd love to see a variation/combination of #56 & 60. We prefer the thinner, lower case k in the shields seen in 60 however prefer the 3/4 lines around the K as seen in #56. Reason being there is a store called Circle K here in the states, that has a similar look with the complete circle around the k.
Also would you do a gray outline shield as well for this variation just so we can compare. And lastly, can you try a few different fonts???!!!! Perhaps a thinner, sharper font again for comparative reasons! Your work is awesome! Thank you.
Allison