• I have a dfour which is a dzero for shimano rings, very happy with it, it has been consistent and easy to use, which is all you can ask for really, the fact I can use shimano rings is nice but I could live without it.

  • Thanks for that.

    I had actually mistyped and meant the DFour91!

    My friend got the SRAM version and swears by it, so that's where I'm leaning (if I pony up and go down the PM route).

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