Julietiede - there's some great advice here about fit etc. I differ on one point and that is that endurance bikes are not just a different geometry from race bikes - race position versus more upright.

My experience is with a Specialized Amira (race) versus a Specialized Ruby (and a Cannondale Synapse). The latter two are endurance bikes. My position was very similar on all three, that is, I was slightly more aerodynamic on the Amira but it was millimetres of difference.

But there was a big difference in the ride comfort. This was mainly because the Amira was very stiff both horizontally AND vertically whereas the Ruby and Synapse were more vertically compliant - designed to be stiff horizontally and give a more comfortable ride because of greater vertical flex. This is noticable. I am much less fatigued when I ride the Synapse than riding the Amira. The Amira feels slightly more responsive but this is at the cost of feeling every bump or rough surface while my Synapse feels like it has shock absorbers.

But I don't know whether the model of Orbea you are considering is endurance or race