Pon... We cannot decide between your designs and one other designer's. Can you make some adjustments for us? We like design of #69 (and #70 as a compliment) but would like to see you use a circular ring in the design such as is found on a real on-off button - see
http://images.all-free-download.com/images/graphiclarge/power_button_states_on_off_clip_art_9202.jpg for an example. We would also like to see the "i" be a part of that button design. Could the "i" be combined in design with the aircraft silhouette? Then place the word, START" below (or aside) such as you have in #69 & #70 - and #71 as it also works well with the tag line. Is this asking too much?