What bothered me most were the conditions. I've heard about the problems with rough roads and buffeting winds (e.g., while drafting) and position changes. But, I would have thought these conditions were perfect for the iBike -- smooth road surface, light winds, relatively consistent grade. IMO, one couldn't ask for more perfect conditions on the road.sogood said:Yes, that is a concern. There seemed to be a range of reports on the accuracy of this product which may well be related to the firmware version. I continue to take the watch and see attitude on it. The big advantage of course is its price and portability, which may also relate to its inaccuracy.