Other than the fact that you already have a stable of very nice road bikes, why do you want carbon? I'd be very happy with most of the bikes the previous posters have suggested.
__________________
The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.