The guy at my LHS said the CF blades would splinter if you crashed. I still use my plasti blades because $9.99 blade grips are cheaper that $15 blades and I break the grips less.
ORIGINAL: AeroDave
The carbon blades are also nice. You really do notice the difference in cyclic response. And they are really tough. Only problem is, if the blades aren't absorbing the impact, something else down the line will and that means broken parts.
BTW, I finally get to fly outside today for the first time since I got my blade. She's gonna see the world upside down for the first time! Maybe I'll get a pic....