>>978090Better chain stifness, more reactivity, less rubbing between the cogs, cheaper to replace, less likely to worn out soon, lots of aftermarket replacement parts, everything related to 10 speed gets cheaper and cheaper with the new 11 speed drivetrains so there's always available products.
If you are into racing and you are someone who is mad about sprinting and quickclimbing, then 10spd is the way to go. If you crash it is cheap to replace. A Shimano Dura Ace 7900 with do the job you want and has nothing to envy to the new 9000 or 9100 groupset. A 11 speed groupo won't fix any problem related to the cyclist. If you don't have a good cadence with a 10 speed cassette (11-28) then a 11 speed won't make it any better or easier. "if you can't get out of a climb with a 10spd then a 11 won't make any difference"
Another guy told me that 10 speed tends to be more precise and open to the heavy duty work.
