Well I have one on order for my Vitus so will post up the results when it arrives, annoyingly I could get one now from Europe but dont want to muck around my LBS who I am a big fan of.Thanks R120. We tend/can to use Eco most of the time and think that it makes us work harder - better exercise. Yes, I've been reading up on the new batteries earlier. They look pretty exciting. I did read one review suggesting that they wouldn't fit my bike, but with a new mount I can't see why would be the case.