The wired/wireless debate rages. I like the low cost and easy setup of wired. But my experience with two different Cateye wired computers has been problematic. The weak link is the contacts on the mount, which corrode and malfunction. I suppose if I had the discipline to clean them every couple of days, or if I didn't ride in the rain, they would have been more reliable. I recently switched to a wireless Garmin unit, and have had zero issues with it on multiple bikes.