Chandne

Why are you restricting yourself to two specific brands and models? What is the weight of your current bike? Like me, you will likely have to climb hills and bike more to get stronger. That is a painful process and makes a much bigger difference, though bikes/wheels make a small difference for sure. I have a Roubaix SL4 and just picked up a Tarmac S-Works that I will build up soon. On the Roubaix there is a specific route I can do in 1:05. I bet with enough riding through the winter, I can do it in 55 mins. However, with a 2-kb lighter Tarmac, I will be lucky to shave 2 mins off that time right now.