I think you could upgrade your components and be very happy with the bike, unless you are looking to seriously loose weight when you were to change bikes.

My mom has a OCR C3 and she really likes it, she upgraded it to ultegra and went from the triple to a double compact. She also put on a set of mavic kyserium es's. She does call her bike the work horse, because it is a little bit heavier, but she likes it that way because when she gets stuck in cross winds she doesn't get blown around like the rest of us.

All in all she has had it for about 2 and a 1/2 years and she takes it with her when she goes on long vacations.

But in the end it is a personal preference, do you want a new bike completely, does the thought of looking at a new frame excite you? Or do you really like how your current frame feels but you just want smoother shifting, maybe some lighter better rolling wheels?