road.cc have a really nice review of the new Dura Ace Di2 electronic gear system. I'm not a Shimano fan (I much prefer SRAM or Campag) but I can totally appreciate the technical skill behind Di2.
I certainly won't be getting one any time soon (heck, at £1700+ it costs more than my new road bike budget!), but I love to see technical innovation, especially when it is executed as well as this is.
http://road.cc/content/review/6876-shimano-dura-ace-di2-groupset
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