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S type on sale already good price @danstuff says will still be cheaper. What I like is not USB but battery, no Bluetooth don't care. But does not have left/right power that NG has. I think I might need?
I'm not Eco and never will be so don't know.
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But does not have left/right power that NG has. I think I might need?
You won't. Absolutely pointless metric unless (according to @Dammit) you need it to get your saddle at the right height. Personally I use a tape measure or some electrical tape to do that job. And anyway, it's not a real LHS/RHS split, but some made-up number which assumes that all the power on the downstroke is due to one leg. Which it isn't. So it's a useless number that isn't even right.
What's the diff between S, NG and NGeco in layman's terms?