I'd been on harsh Aluminum forever and had always found carbon to feel dead. Eventually carbon came around, but not all carbon.
I really like cannondales himod carbon. Then again their take on building carbon follows their philosophy on the CAAD 9 , 10, 12. Too stiff for most people, but if you love it you love it.
If you can test ride a hi-mod Synapse. It won't let you down on performance, but it might let you down as it won't have the vibration muting that steel will give you. However those SAVE chain stays are absolutely amazing!
The kingpin on the Topstone is amazing too. But for all paved roads I'd rather be on a synapse with 28c tires.