The Look Keo Power system is to begin shipping any day now. I saw this at Interbike, and was very impressed. I’ve never been a fan of the wheel based systems as they limit wheel choice, and add quite a bit of weight. Look has solved this issue by moving the power measurement system to the pedals. It is very easy to install, and also easy to transfer to a different bicycle, which is a huge plus. Also interesting, is the ability to monitor left and right power distribution. I think it’s quite cool being able to see if one leg is more powerful than the other, and then being able to work on equaling out power distribution. I was impressed with the prototypes, and trust the finished product will be excellent.