I went with a Pilot 5.2 after doing all the research. OCR, Rubiax were at the top of the list, but Trek had better equipment for the price. Plus the Trek dealer is fantastic and did a bunch of extras for me like swapping out the Saddle no charge. For the most part they were all good enough, it's the dealer that sealed the deal... so my recommendation would be to shop dealers as part of your weighting factor.
Cannondale has the Synapse as well, the dealer I visited was way over priced, cost more then the Pilot and the Pilot is full Ultegra while the Synapse is full 105.