Cervelo Dura Ace Di2 vs KEYSTO KS680

Compare Specifications of Cervelo Dura Ace Di2 and KEYSTO KS680

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Cervelo Dura Ace Di2
Cervelo Dura Ace Di2

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KEYSTO KS680
KEYSTO KS680

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Technical Specifications
Frame -- 26" Alloy Special-Shaped Tubes
Stem Cervélo Carbon Stem --
Handle Bar Cervélo, AB06 --
Fork Cervélo All-Carbon, Tapered R5 Fork for Disc 26" Steel Suspension Lock-Out Travel:100mm
Seatpost Cervélo Carbon SP18 --
Crankset Shimano Dura-Ace 9100 52/36 --
Chain Shimano CN-HG901, 11 spd KMC
Shifters Shimano Dura-Ace Di2 9170, 11 spd KS80
Saddle Prologo Zero II STN --
Headset FSA IS2 1-1/8 x 1-1/2 --
Derailleur Front Shimano Dura-Ace Di2 9150, 11 spd FD-QD-13
Derailleur Rear Shimano Dura-Ace Di2 9150, 11 spd RD-HG-40A
Cassette Shimano Dura-Ace CS-R9100, 11-30 --
Tyres
Front Vittoria Corsa TLR G 25c 26" x 2.125"
Rear Vittoria Corsa TLR G 25c 26" x 2.125"
Wheel / RIM DT Swiss PRC 1450 Spline 35 Disc Spoke
Brakes
Front -- Alloy Mechanical Disc
Rear -- Alloy Mechanical Disc
Suspension
Front -- --
Rear -- --
Colors Available
Colors -- Black


Physical Specs
Length -- --
Overview
Features -- --
Additional Details Bottom Bracket : Cervélo BBright Connect 24 x 90

Brake caliper : Shimano Dura-Ace 9170 Hydraulic Disc

Brake Rotor : Shimano SM-RT900, 160 mm
Wheel : 26" Alloy Double Wall
Chainwheel : 24/34/42T*170L

Which one do you think is better? And why?
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