Back on topic. Of anything CF I have had bad luck with it is seat posts. I had an Easton one that slid on me. I had a cheap no name one that just flat out broke on me and for the longest time I used the Giant Aero post (that came on stock Giants for a while).
I had a
Thomson Elite post that someone let me have and I strayed away from it for my blind love of Carbon Fiber. This year I started loosing that blind part and started looking at ways I could improve my bike in areas without carbon...if it truly was a better choice.
The first thing to go was the seatpost.....I am very happy with the Thompson now...Also it weights quite a bit less than the Aero post as well. In fact I have a new frame on order and it comes with its own seatpost, I have not decided what I will do yet....we will see...