Due to a Facebook DJI Phantom group posting I had a look at my props (Phantom 2 V2 & H3-3D). Out of the box 9450's were fitted, and another set of them were added in the box separately. As an incentive from my (official DJI) dealer I got an extra set of props (an extra battery and a camouflage sticker set). I have changed the props which were fitted out of the box with those given by my dealer, because I wanted to see if there was less vibration with the other set (there was slightly). Now I found out that the extra given set are 9443's. Except for probably a little less vibration, I have not mentioned any other behavior of my Phantom 2 however. Are we sure that there are really important differences between the 9443 and 9450 props?