There are various factors you should take note of when shopping for these particular machines. First, you need to check the control operating system to ensure that it’s easy and manageable to use. Basically, there are 3 main control functions you can choose from which include OPTI, ATTI, and GPS, though they all help in flight-stabilization and assistance they tend to do it in slightly different ways.
If you're flying within the United States, you need to take heed of FAA guidelines—or be prepared to face potential fines or jail time. There are no-fly zones set by the FAA, so don't take off if you're near an airport without notifying the control tower first. And, even if you're out in the middle of nowhere, don't take your drone above 400 feet. Most are set to obey these regulations out of the box, but controlling a quadcopter is just like driving a car—even if you missed seeing that speed limit sign, you're still liable to pay the ticket.
If you’re looking for quality, the Inspire 2 is the best camera drone you can buy that comes ready to fly out of the box. The next best option is the Phantom 4 Pro and after that, the Mavic Pro. If you’re concerned about video quality, just pick one of the three drones mentioned above (which ever one matches your price point) and you’ll be more than satisfied. There are really no other drones that come close to what these three can do. Some people who shoot videos for a living will buy the Mavic Pro, Phantom 4 Pro, and the Inspire 2, because each of them can be useful for different situations.
While each mode is unique and important to understand, most of them still provide the basic function of flight-stabilization and assistance tool. For instance, OPTI typically features an Optiflow sensor within the drone, which is a downward facing sensor capable of identifying patterns on the ground and helping the machine to maintain a straight position.
The Altair AA108 is durably built and will not break easily. You can count on a solid flight time of around 10 minutes, a bit less when you’re running it FPV. However the 720p camera really works well and connects to your phone through WiFi. It’s easy to fly because it has 3 flight modes, 1 beginner, 2 intermediate and 3 advanced mode. It also has Altitude Hold which allows you to take your thumb off the control and the drone holds it’s own altitude, making it very stable because it’s not bouncing up and down as you try to maintain altitude!