First off... Happy International Drone Day (yes, Google it!) My prop balancer arrived in the mail yesterday and I only had time to play with it now on a weekend. Nothing much can be said about the Du-Bro prop balancer other than it is superb! It's true what they say about it being the best tool for the job. I bought this, along with extra plastic props from DJI. I also have CF ones from a brand called 'RCTIMER' (just out of curiosity, as they were cheap), which I got from a hobby shop in Ortigas, and which shall remain nameless. I wanted to be serious at reducing my P3S' vibration... NOT that it's a problem now, but as an engineer, I just thought I'd take a look at how much out-of-balanced, if any, my existing DJI props were. To my surprise, the DJI props were pretty balanced as it is. No further modifications were needed. I flew the aircraft just above head level and touched the landing gear. Not much vibration was going on and it only felt more like a hum. On the other hand, the 'RCTIMER' props were terrible. I tried flying them PRIOR to balancing and I can definitely see the bird struggling. The vibration is definitely affecting the IMU, which of course affects the stability of the aircraft. If I touch the landing gear mid-flight, it felt like the aircraft was about to break apart. After balancing them however, the hand-on-the-landing-gear test flight came very close, if not the same, to how the DJI props performed. But as you can see in the picture, I only got to tame these props after adding some strips of electrician's tape to all of them. In summary: Only buy genuine DJI props. The quality and value is well worth the extra cost.