2016 Cervelo S3 vs Argon 18 Nitrogen Framesets

Is this a like-for-like comparison of mid-tier Aero frames? It'll be used for racing next year
I've a Dura-ace 9000 mechanical groupset to throw on it. Brakes being the bike difference - have seen mixed reviews of the direct mount on the Nitrogen.
I'm also tempted by the Bianchi Oltre X2 but it's a bit more pricey
I've a Dura-ace 9000 mechanical groupset to throw on it. Brakes being the bike difference - have seen mixed reviews of the direct mount on the Nitrogen.
I'm also tempted by the Bianchi Oltre X2 but it's a bit more pricey
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It is a lower quality item, that's why it's considerably cheaper
Bianchi Oltre XR Sram Red E-tap, Fulcrum racing speed xlr
De Rosa SK pininfarina disc
S Works Tarmac e-tap 2017
Rose pro sl disc
Fair one but its still a pro quality frameset or they wouldn't have used it.