To gauge flight performance, we put the drone through a number of tests to see how the manufacturer’s claims hold up. First we take it to a local football field and see how fast it can clear 100 yards, then do some calculations to get an objective reading on speed in miles per hour. After that, we do a similar test to assess ascent and descent speeds, and all the while, we’re also taking notes on how responsive the controls are, how stable the craft is, how far it can go before it’s out of range, and what the overall piloting experience is like compared to other drones.
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!
Aside from its tiny and hyper-portable design, the Spark’s biggest feature is arguably its plethora of intelligent flying modes. In addition to DJI’s standard stuff, the Spark sports a handful of brand-new modes, including Rocket, Dronie, Circle, and Helix (more on those in a moment). The drone also comes with gesture recognition abilities, which allow it to be operated without a smartphone or controller.
These drones are marketed towards beginners because they are really cheap. However, these drones are not the easiest drones on the market to fly. Higher-priced drones, with the ability to use GPS coordinates and that have onboard obstacle detection and collision avoidance, are much easier to fly than these drones. You will have to spend in the range of $200 to $300 to get these advanced features for a drone; however, you may ultimately be happier if you do this than if you lose or crash one of these drones. 
The JJRC H26WM is a great drone for beginners or those who want a casual drone to zip around with. The camera is pretty decent but nothing too fancy, so don’t expect the world from it. The maximum amount of flight time you can get is approximately 7 minutes, so having an extra battery is a good idea. The camera allows for 2MP in FPV which swings around in all directions.
Similarly, having a few extra batteries won’t hurt, especially if you want to use the drone for extended periods of time at a go. Most drones over 50 have batteries that are available in six pack sets, with a charger also found within the set. These batteries can give you an average flight time of between 5 to 10 minutes before recharging, or replacing them if you don’t have a power source near you. Also note that battery time is usually affected by blade protectors, as well as when there’s a camera attached to the machine.
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.