We like the font that you have chosen. It tones down the futuristic look that #1 started with. We also like the way you used the shield to break up the "Endura" and the "Cool." We're not really sure how we feel about the shield (one of the employees really likes it). For guidance, it would be interesting to see maybe a header or a piston in place of the shield, just to get an idea of how that would look. Also, the "endura" portion on #21 comes across as a little too white. We'd prefer it to look a little more chrome-like.
Thank you for your submissions!