Entry #1 - I really like this logo! Can you take the periods out in the middle? I think the lines suffice in seperating the letters. Besides if we have periods after the E and F, then you also need one after the C! I like how vibrant this logo is!
After staring at your designs for a while, I decided that I like the square design (#13) better than the shield ones (#15,#11). The shield reminds me of other company logos, and I would rather be more unique! They all look great!