Without wanting to disagree with my fellow contributors, my main go-to system is now the Mavic 2 Pro.
I started flying Phantom 3 Pros in 2015, upgraded to the Inspire Pro, then won this site’s Phantom 4 Obsidian competition & flew that for 12 months. I now travel extensively & the Mavic is the perfect blend of portability & quality. I shoot documentaries for the BBC, high end corporates for multi-national corporations and lots of things in between & the craft’s image quality has never been called into question.
Yes, I have 4 batteries, ND filters etc etc, but earning good money from flying doesn’t have to run to tens of thousands in investment. That said, nothing beats good technique and for that you just have to practise!
Good luck in your venture.
Regards,
Martin.