Kestrel 5000 SL Shimano Ultegra DI2 vs Polygon Strattos S2

Compare Specifications of Kestrel 5000 SL Shimano Ultegra DI2 and Polygon Strattos S2

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Kestrel 5000 SL Shimano Ultegra DI2
Kestrel 5000 SL Shimano Ultegra DI2

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Polygon Strattos S2
Polygon Strattos S2

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Technical Specifications
Frame Kestrel Super Light (KSL) 800K high-modulus carbon fiber, PF30 BB ALX All-Round, QRx130mm
Stem Kestrel KSL Aero Carbon Entity OE Alloy, EXT: 90mm (XS, S, M) / 105mm (L, XL), BB: 31.8mm, R/D: 10degree
Handle Bar Oval Concepts 750 6061 alloy base bar, Oval Concepts 750 6061 alloy clip-on Entity Sport Alloy, W: 400mm (XS, S, M) / 420mm (L, XL), BB: 31.8mm, R/D: 124mm, B/R: 80mm
Fork KSL AERO Pro SL TT full-carbon, 1 1/8" steerer Light Weight Carbon Fork, Straight 1-1/8"
Seatpost -- Entity Sport Alloy, 27.2 x 350mm
Crankset Vision Trimax Compact TT, 52/36T Prowheel Ounce-421C-TT-N 50/34T
Pedals -- Alloy Cage & Body w/ Reflector
Chain KMC X11EL w/MissingLink, 11-speed KMC Z-8.3
Shifters Shimano Ultegra Di2 TT, 11-speed Shimano Claris ST-R2000, 2x8-Speed Dual Control Lever
Saddle Prologo TGALE TRI, T2.0 rails w/ U-Cage Entity, Steel Dia 7mm
Headset FSA CX integrated 1 1/8" top, 1 1/8" bottom w/ 10 mm top cover Zero Stack (ZS) Semi-Integrated Bearing for Straight Head Tube, ZS 44/28.6 | ZS 44/30, ID: 44mm
Derailleur Front Shimano Ultegra Di2, braze-on Alloy QRx100mm 32H
Derailleur Rear Shimano Ultegra Di2, 11-speed Shimano Claris RD-R2000-SS Direct Attach
Alloy QRx130mm 32H
Cassette Shimano Ultegra, 11-28T, 11-speed Shimano CS-HG31 11-30T
Bottom Bracket Vision PF30 Prowheel BSA Threaded FOR 2-Piece Crankset
Tyres
Front Vittoria Rubino Pro Speed, 700 x 23c, folding Performance Tire 700C​
Rear Vittoria Rubino Pro Speed, 700 x 23c, folding Performance Tire 700C​
Wheel / RIM Oval Concepts 950 F, 700c 18/24H aero carbon-alloy rims Alloy Double Wall 622-15 32H
Brakes
Front -- TEKTRO R315 Caliper
Rear -- TEKTRO R315 Caliper
Brake Lever Shimano Ultegra Di2 for TT/Tri, Flight Deck-compatible Shimano Claris ST-R2000
Suspension
Front -- --
Rear -- --
Colors Available
Colors Carbon / Blue Gray Blue
Light Red


Physical Specs
Length -- --
Weight 9.13 kg --
Overview
Features -- --
Additional Details Sizes : 50cm, 52.5cm, 55cm, 57.5cm, 59.5cm --

Which one do you think is better? And why?
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