I quite like the 261 icon - I think we prefer having the typeface in a single line - apparently it will be easier to use in multiple applications. Can you also try with the tagline below the icon and less of a rounded typeface would be great too. Thanks!
#281 is too like the copyright sign. #278 is more interesting, but I don't want it to end up too close to the olympics idea. Can you play with that idea a little more? Also can you try and incorporate a little orange into it? Thanks!