I like the layout of #14 especially. It looks like it has motion, energy, but remains bold and classic. Would love to see some other colors. The font looks great.
These last three (#48, 49, 51) are your best yet. Really like the flag idea. Could it be more flag, less pennant? Client doesn't like the Internet Explorer Swoosh so much. Love the colors. Love the font. You're on the right track for sure.