In reality, this changes all the time. Technology is constantly evolving, and new companies come and go. But through it all, there have been two companies that have been producing stunning multicopter systems. Even the pioneer of the multicopter shooting platform (DraganFlyer) has fallen to the back of the pack. The two companies that have stood the test of time are DJI and MikroKopter.
I know I'm going to get some heat for that statement, but it's true. These systems are truly turnkey. Out of the box and ready to go, just snap it together, perform a few dozen flights of shakedown, and go earn some cash flying (provided you already know how to fly). However, what drone do you get for the camera you've chosen?