DJI does sell both carbon and plastic props and you won't go wrong with either of them.
With the carbon props, they more durable, lighter and can offer increased performance. However, from various readings on the forum and recounts in YouTube, carbon props are more susceptible to stalling the aircraft. In practice, if you descend quickly, the AC has a higher chance of struggling to descend yet maintain stability in the air. Plastic props still have this risk to following the laws of aerodynamics but not to the extent of CF.
Doesn't hurt to try them out if it won't break the bank - they do look pretty slick on the Phantom. Just stick to DJI OEM props to have that quality assurance.
Safe flying!