Astrale 8 Cadence wired on 3 bikes here. Have used several brands on my other bikes but prefer the CatEye product I guess. Cadence can be of use to encourage a faster pedal rate at least for me, but really don't need it. Have always used wired but can see how some prefer the wireless. As far as screen layout their is a toggle to swap the cadence into the upper or lower portion of the display.