I just tested my P4. I 've had P2V+, P3P, and I just upgraded to P4. I compared P3P and P4. Note: My P3P was bought in November and the original camera was replaced by DJI as I complained about the sharpness. Net net: Camera of P4: much much better. I finally don't need to use the sharpness function of photoshop. I can rather use the noise reduction. Look of P4: much much nicer. It is like an iPhone compared with a Motorola razr. Speed: you won't believe how fast this machine can go. It is like a BMW 335M compared to a Toyota corolla basic. BUT, there is a catch: if you activate obstacle avoidance, P4 is much slower than my P3P at GPS mode. Battery: it sucks...no way to get 28 minutes. Hope it helps you decide if you want to upgrade.