I have one of the original powertap pro units made by eTune (circa 1999/2000 I think). As anyone with experience of these knows the hubs were really heavy as well as unreliable in the wet. I was thinking of upgrading to a new SL hub - can anyone tell me if the old sensor/display unit is compatible with a new hub. Also, does anyone know if the new Saris software would work with the old system.
