I like the CF spinners on the larger engines. I always use Locktite on the screws for safety, and have never had so much as one screw come loose. Also, at their feather weight, I feel that they are less of a ballance issue than aluminum. With a ballanced prop, they all run very true for me.

And I think they look good as well.

One thing though, they are fragile. I cracked one on the first trip to the field with it, when the plane apparently rolled slighty and bumped my tail gate. I CAd it and have had no problems. Just pissed me off for a brand new $65 spinner to be disfigured before it even got in the air. I am more careful with them now.