Look, I am a greedy person and thus bought both, the P3P and the I1, after playing with both for 2 months now, I mostly find the inspire collecting dust and I love the P3!
P3 Pros:
- Small, light, easy and practical to carry around in the DJI hardsell backpack!
- Takes a minute to setup, just bolt on 4 props and off you go flying.
- It can take much more beating than the inspire, I crashed my 1st P3 against a building and it fell down from 12 meters and only the gimbal broke, the quad continued to fly.
- batteries charge much faster, 40 to 45 minutes and they are full.
- Long flight times 20 - 21 minutes typically.
- I had more range with the P3, last time I reached 3200 meters and the picture was crisp whereas at 1800 - 2000 meters I start getting picture freezes with the i1
I1 Cons:
- Big heavy and bulky, impractical to haul around.
- takes some time to setup and attach everything and prepare it for flight.
- It is very fragile, the slightest crash will cripple it and the repair cost will be high.
- Batteries charge too long > 1hr
- Flight times are typically 14 - 15 min for the TB 47 and 15 - 16 for the TB48
so if you need a drone just for personal enjoyment go get the P3P and you will be more than happy, but if you want to make money from it and you specifically need the features specific to the i1 go get the i1, the pro features of the i1 are:
- props don't get in the shot when flying forward
- camera rotates 360 degrees
- ability to control the camera with a 2nd remote
- HDMI output without IOSD to project/show on screens at events.
despite that, in my country most events where there are lots of people like sports gatherings, weddings etc are filmed with phantoms because inspires are too heavy and pose a danger to the people underneath in case something goes wrong