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rm -rf
I'm familiar with the system, I've played with one in a local Colnago dealer the other day. For the "bling factor" they are unbeatable but the ratios are still very close, surely a big innovation of it's day but for real hills I have here I can't think of anything but a double crank.
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bikemig
Bar end shifters offer a nice solution but IMHO they look ugly. I would rather have down tube shifters instead of bar ends.
To illustrate in car terminology, what you (and most other guys) advice is this:
While I want something like this: