I just don't understand needing so many gears. I climb very steep loose stuff and ride smooth pavement
with my 2x10 with 13.5" to 79" gear Inches. More gears to me just means more overlapping.
a 27 speed has what,,16 actual different gears ?? I dunno.,
I get plenty of flat road speed at a 90 rpm cadence. If I wanted more Id do a triple up front.
I mostly use 5 or 6 of my 10 gears anyways..My Tour Easy had 27gears, I used about 9 of them.
Not knockin,, just a different perspective..
Just sayin.