I like the P4 so far. Let me say that first. But I will not be getting one. Here are my thoughts and why. Adding collision avoidance is a good call from DJI. This will definitely help newer pilots when flying. However, I think they could have done better. First, why did they decide to only have sensors on the front and bottom? I understand most flying is done forward, but what about flying sideways next to the subject? Or backward in front of the subject? I don't think it is going to avoid anything when doing that. I do understand that flying this way may be a tad more advanced than flying forward, but still curious why they did it. Second, I question the accuracy of the system. Obviously we have no idea yet of how accurate the sensors are, but I have my doubts. Will it detect a small branch from a tree? A small hanging vine? Power lines? I'm sure flying under trees is not as common as flying next to mountains and what not. But I do it a lot, and I would be impressed if the sensors picked up something small like that. I like the longer flight time. Really no negative there. Although I have no problem landing my P3 to swap batteries. I can already fly as long as I want, so that is not a selling point for me. The faster advertised speed is a nice feature. There were a few situations where I wished my P3 was faster. However, I think this is all software related, and has nothing to do with the P3 not being capable of flying faster. I REALLY wish DJI would have an option to not limit the P3 flight angle. My P2 in full manual mode was insane fast, although a lot harder to fly with no assists. I'm sure DJI just made the max flight angle a little more on the P4 and I bet we won't get it for awhile if ever on our P3s. Subject tracking is also a cool feature, but again, I believe this can be added to the P3. Doubt we will ever get it though. I like the added sensors for redundancy, but am curious if they are calibrated together or separate. The P4 will be awesome for a newcomer or someone who doesn't have a P3. I am looking forward to release and videos. Hopefully I am wrong about the sensors. I will be sticking with my P3 though. It has been amazing.