These are both interesting. I can see the connection to the Killington K shape but a nice variation. I'm a little concerned that if I wasn't familiar with the name K-Zone, I might not recognize the K as a "K". I wonder if you could try a slight variation to #11. I don't know how this will look but I wonder if adding a small black bottom leg, to the bottom of the vertical leg of the K. Similar to the spacing between the black top and orange. It might make it more clear that it's a K.