Brandnew B'Twin Triban 3 or second hand with better spec?

i have been attracted by the B'twin triban 3 from decathlon ever since i saw it and for £300 with carbon forks i think its a good deal. its light weight and components are not too bad. the only down side is the crank and chainset which is a prowheel brand and they only have Red. but other than that i think its a good bike.
My dilemma is for £300 i could find 2nd hand with a better spec. i also cant find any review about the triban 3 so im not sure if it is really good bike or not.
i did found some for the same price or lower
• specialized allez 2008 £300
• carrera virtouso £200
• giant scr4 £250
My dilemma is for £300 i could find 2nd hand with a better spec. i also cant find any review about the triban 3 so im not sure if it is really good bike or not.
i did found some for the same price or lower
• specialized allez 2008 £300
• carrera virtouso £200
• giant scr4 £250
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