We like your graphic image in #51 and would like to see this with more color and the text wrapped around the symbol in an arch/circle--giving it the feel of a seal or stamp. Include the tagline "Join the Revolution" only if you feel it adds to or works well with your design.
We also like that you used the "o" in operation and in vapor. On #46 we'd simply like to see more color.
It seem I can't submit any more design, could you please put me on at least 5th rank? I'll submit 1 entry with your suggestion then if it don't pleased you, you can eliminate it immediately.