I have the R9160 buttons, and I love them. I never had the other style to compare, but I like the fact that the shift button is mindlessly at the end of the extension and I can shift with my brain switched off.

I've tried both and much prefer the R671 because I have no interest in syncro shift. I want to be able to control my FD.

FYI my 2-button shifters came with attached wires. I think the 1-button ones need you to supply wires. Just something to keep in mind as you get your parts list together.

I wanted 2-button b/c I like controlling the FD. I use that all the time for starts and stops and when climbing hills (I live on a hill and like hilly race courses).

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To breathe, to feel, to know I'm alive.

Yeah, the newer ones come without the electric wires (which I think is a good thing, as you can now determine the length of the wiring), so indeed keep that in mind when comparing the cost ;)

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

Sorry, should have said before......

I'm going 1X so no front mech.

Simple left button for easier, right button for harder.

It was more of a which shifter is better.

Swinging towards the 9160.

Cheers,

Pat.

The 9071 (older one button shifter with the buttons on top) is going to have maybe 10-20 mm more reach than the 9160 (button on the end). If you have adjustability in your extensions it shouldn’t matter, but worth noting. The 9160 require a smaller “push” to press though both are easy.

What is your normal hand position? I would set up my shifters so I don’t have to move my hands at all. With 9071 you could have them on top or flip them upside down where they would sit like a trigger on a gun. It just all depends on what works best with your extensions and hand position

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Matt

If you want the extra reach of the R671 I'm fairly sure you can just program both buttons to do the same function on the left/ right shifter.