cwdzoot said:If friction shifting was level 1 and down tube index shifting level 2, STI, Ergo, Double tap cable shifting level 3 then Electronic shifting level 4. Along the way each step making small improvements to the way we ride because of the control we have over shifting and braking.
Double tap is a step backwards, i've used it and don't agree it is on the same level as STI/ergo
Electronic shifting is to STI, Ergo and SRAM as Index shifting is to friction shifting.