Just wanted to post a review of the new Carbon Reinforced props from DJI.... I got them a few days ago, and I am really happy.... They are stiffer than the standard 9443 props, but more flexible than true carbon fiber.... I have bought just about every prop out there, and must say these have the best response, and sound that I have flown... Not to mention they look pretty badass..... They come in yellow or white tips for $17.00 per pair.... The package says E300, but both DJI and the distributor confirmed they work with the phantom also... If you want to dump the white DJI stock props, this is a great alternative..... Happy Flying !!