Well the only company I can comment on is Anvil. Their products are on my 70 Camaro. This is the only time I have been exposed to much carbon fiber stuff and I'm not really impressed. Now I must clarify that my stuff is at least 7 yrs old and installed by the previous owner and it is fiber laminate over fiberglass.
I have a hood that has a bow in it front to back. And the hood, front fender liners, and rear deck panel have all developed gray spots in them. I have discussed this with Anvil and they stated that they have improved their quality substantially since my stuff was made. The also stated that excess heat tends to cause the graying. But there is substantial weight savings by going this route. Just depends on your goal.
Here is another supplier of carbon pieces. Don't know who makes them. Although I think this person would be particular of the quality.
http://www.customworksperformance.ne...ass-parts.html