After spending the last four years on a 2011 Trek Madone 5.2 Ultegra I test rode two new bikes. The first was a Trek Domane 5.2 Ultegra. It was the 2015 Domane frame that I wanted to experience. Hearing many of the raves of a more compliant ride, thanks to the ISOspeed coupler and redesigned front fork, I can confirm that both components of the frame work. The ISOspeed coupler is extremely effective. Along with the longer wheelbase and the new fork, this bike is a joy to take on extended rides. The best part is that it feels no less responsive or stiff when out of the saddle than the Madone, at least to me.
Next up was a Specialized Robiax Expert with Shimano Ultegra Di2. It was the Di2 that I wanted to test. So much has been written about how well this second (or is it third) generation of Di2 performs. After a short thirty minute test ride I was amazed at how well this stuff works. With just default settings (customizable with software) shifts were fast and crisp. No missed shifts, NONE! It does take a little getting used to as it's easy to forget you're just pressing buttons, not throwing levers.
At the end of the day I knew it would be a 2015 Domane 5.9 but the big decision would be Dura-Ace or Ultegra Di2, both costing the same dollars. The guys at the bike shop talked me into the Di2 stuff due to shifting performance and no cable replacing. I took their advice and after 400 miles I am so glad I did!