Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Surly ECR

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Surly ECR

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Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2
Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2

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Surly ECR
Surly ECR

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Technical Specifications
Frame S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc Surly ECR, 100% Surly 4130 CroMoly steel. ED coated. Double-butted main triangle. TIG-welded
Stem Roval Rapide Cockpit, Integrated Bar/Stem ProMax 4 bolt, 31.8
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem Surly Moloko
Fork -- Surly ECR, TIG-welded custom-butted 4130 CroMoly, non-suspension corrected, 1-1/8˝ steerer tube, 203mm disc brake clearance
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset SeatpostPromax 27.2, 350L, Offset
Clamp: Surly Stainless, 30.0mm (Surly stainless included)
Grip Supacaz Super Sticky Kush Velo Lock-On
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter SRAM NX Eagle 30T
Chain Shimano Dura-Ace, 12-speed SRAM NX Eagle
Shifters -- SRAM NX Eagle
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base WTB Volt Sport
Headset -- Cane Creek, 40 series, 1-1/8"
Derailleur Front Shimano Dura-Ace R9250, braze-on --
Derailleur Rear Shimano Dura-Ace R9250, 12-speed SRAM NX Eagle
Hub Front -- OE 32h QR
Hub Rear -- OE 32h Thru axle
Cassette Shimano Dura-Ace, 12-speed, 11-30t --
Chainrings 52/36T --
Bottom Bracket Shimano Dura-Ace, BB-R9200 SRAM Powerspline 118/73
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm Surly Knard 27.5x3.0", 60TPI Tubeless Ready
Rear S-Works Turbo Rapidair 2BR, 700x26mm Surly Knard 27.5x3.0", 60TPI Tubeless Ready
Wheel / RIM Front: Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 51mm depth, Win Tunnel Engineered, Roval AFD hub, 18h, DT Swiss Aerolite spokes
Rear: Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 60mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes
Rims: WTB Scraper i40 TSC
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc Avid BB7, Centerline rotors. 180/160mm
Rear Shimano Dura-Ace R9270, hydraulic disc Avid BB7, Centerline rotors. 180/160mm
Brake Lever Shimano Dura-Ace R9270, hydraulic disc Avid FR-5
Suspension
Front S-Works FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc --
Rear -- --
Colors Available
Colors Satin Fog Tint / Green Ghost Pearl / Red Ghost Pearl Fade
Satin Carbon / Viavi Cynan Blue / Viavi Silver-Blue Pearl Fade / Gloss Metallic White Silver
Tank Green
Blacktacular


Physical Specs
Length -- --
Weight 6.62 kg --
Overview
Features -- - Two wheel platforms available: 27.5+ for frame sizes XS–M and 29+ for M–XL
- Dedicated Rohloff cable routing and mount for OEM 2 axle plate.
- Dedicated Surly Trailer mounts.
- Gnot-Boost rear spacing with Rohloff torque arm slot and Bill/Ted trailer mount.
- Rack and fender, multiple three-pack mounts and mid-blade.
Additional Details -- Cog or cogset: SRAM Eagle 11-50T, 12 speed

Which one do you think is better? And why?
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