These replaced my previous set of Dura Ace 11 speed levers which ate the cable inside the lever and was (I thought) ruined.
The new levers work great and I hope Shimano has upgraded then so they don't eat cables any longer. We'll see.
But when new they certainly work well!!!
There's a reason why these are the Shimano apex. Outstanding, very precise and crisp shifting. The price on BTD was awesome! Have one set on a 2013 Ridley Helium and got this set for a 2018 Helium SLX frame. I recommend using these with Dura Ace rear and front derailleurs.