What other bikes have you test ridden? What have you to compare to the wither the Scott or Orbea?
My thought is if you think you might get into road riding seriously, to try and find a bike with Ultegra v 105 components. 105 is OK, but Ultegra will be there for you in the long haul and are much better components.
It's interesting your choice is either Scott or Orbea... both bikes genberally favored by Tri-althletes but aren't necessary the most comfortable riding bikes for long distance, not to say eiyther bike is worthy of a century but what is your intent in buying a road bike?