I would want to get rid of the star. I like the action in it, and would want even more. I would also like the font to represent more of an upscale or high end feel to it.
On entry #5 if you could incorporate a C and F into the design to represent Century Fitness that could be a possibility. On entry #4 maybe you could get rid of the dots at the end of each swoosh and make the whole design even more intricate. With entry #3 maybe try to do the word "Fitness" in more of an upscale cursive kind of font and continue with a more intricate and detailed design all around the words.