Ooh, tough choice, and a big jump! Are both within your budget? The wheels on the Orbea might be nicer (I have no idea, really, and being in the US the bikes might well be spec'ed differently from what you can get). Have you been able to take both out on a long ride, or are we talking bike shop parking lot or trainer?
Orbea just isn't as big as Specialized, and I think there are fewer shops that carry it overall, so that's probably why it's harder to find reviews.
Since they're both carbon, you do need to be a bit careful with them; barring crashes or other mishaps that might damage the frame, either will last you a while.