I am highly disappointed in my P4. I received it 2 days after the release date. Only having experience with my recent purchase of a P3 Standard, this was going to be a major upgrade for me. Bigger, stronger, faster, right? Not so much. I love how fast the P3 is. The sound it makes when I stop it directly overhead is so cool. So, the P4 should be even more impressive. Sadly, it is not. I think the P4 is about half the speed of the P3 and the whoosh of stopping the bird just doesn't do it for me. I have not used sport mode yet as I am reticent to give up the stability of assisted flight. Maybe once I get a few more hours of flight experience, I can regain the thrill of speed. The other issue that I had with the P3 was that the props and propeller guards were ending up in my flight videos. I tried to rectify this by removing the prop guards. This only made a slight difference. The props were still in my videos. I was excited when the DJI pre-release videos stated that the problem had been fixed by moving the prop platform higher. Unfortunately, when I had my maiden flight with the P4, this all turned out to be smoke and mirrors. The props clearly show up in my videos. The only usable videos will be those that are slow-speed or static. I guess reality seldom lives up to the hype.