I concur with a lot of what excitable1 says, I too have found it a bit of a slog on some climbs and think it’s because I’m missing some mid range gears that were available on the 2 x 10. I have to spin a bit more sometimes as I’m looking for a gear ratio that’s Btw two available rear ones? I’m running a 32T up front, and that does cover the ratio extremities of my previous 2×10 set up
Not had any problems at all with indexing since the day I set the XX1 up in Feb, lovely and crisp and not lost the chain once.
1 minor ‘problem’ is due to the X teeth on the chainring and jockey wheels, they do seem to cling onto mud and trail crap more than a normal tooth so I have to employ a toothbrush to get them clean!
I also got my full groupo from Germany and saved ~£200 on UK prices :wink: