Hi,
I know what you are going through as I just made my first bike purchase last week. I never made it to ride the Orbeas, because it was more than my Pilot and I decided I really wanted carbon. I also liked the giant ocr in the carbon. I decided to buy my 2005 Trek Pilot 5.0 which is full carbon with Ultegra and 9sdp triple. It does have great bontrager wheels and cranks and so far I'm really pleased. I read a lot and went with the theory of buying the best frame you can afford as you can always swap out components. I also was really hoping to get into a carbon frame for the comfort in the long run. Lastly it is what bike feels best.
Good Luck!
Wisconsin