Originally Posted by
chaadster
I'll add that "endurance" frame design is about more than stem position and handlebar height, and is often about more relaxed geometry than comparable race frames. Therefore, be aware that if looking at an "endurance" frame, you'll probably be looking at a bike that feels and handles differently than your current bike (which I believe is quite racy).
This is mostly true. The more endurance frame geometry will not only come with a taller headtube, but also a longer wheelbase to smooth out the ride. That said, bikes like the Roubaix, Synapse or Defy can still be raced, and have been at very high levels in events like Paris-Roubaix.