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It was with the HY/RD, I would says it have the same benefit (braking power is near identical), the biggest difference I can feel is that the HY/RD have a tiny less "bite" than a full hydro (may be down to the flexy SRAM S900 levers I was using), and the fact I use organic pads on a loaded touring bicycle, which worn in badly enough to prevent the self aligning system to work effectively.
HY/RD is the best independent* braking system of all disc caliper, the next one up is full hydraulic.
The only drawback with the HY/RD is that a new rotor and pads bring out the best of the system, especially when using Shimano's own rotor and pads instead of TRP which bring up the cost a fair bit.
*I would says cable but that's not strictly accurate.
That pyrenees descending Ed, was it full hydraulic typ hy/rd's? I'm curious as to whether they have the same benefits as full hydraulic because for a while at least I can see full hydraulic being out of reach for me/most people
Also, what about hydraulic, dual pivot rim brakes, surely both of these are being heralded as the next big things separately, put them together and discs have a competitor in the road market?