In reality the overall speed difference between a Canyon Ultimate vs Aeroroad is going to be minimal over mixed terrain. Even World Tour pros are often split between these two frames on the same race stage. So there is some personal preference there too. The Endurace is definitely more comfortable though, with very little performance downside. But then I'm focusing on endurance events, so I value ride comfort very highly. If my aim was to PB my local 25 km loop I'm sure an Aeroroad would give me a measurable advantage. But I'll take my Endurace every time for my daily riding or any endurance event.