Most still cameras are 5 megapixels or higher. Therefore, do not be fooled by the claims of HD for a camera when the manufacturer is relying on the resolution for still photos. It is true what they are saying but not the complete story. Having HD resolution for still images does not explain the possibility of also having a lower quality for video-image capture. 

With an altitude hold mode, which keeps the drone at a specified altitude, the Yanni Syma can hover, ascend, and descend at the push of a button, making this one of the easier drones to manipulate in the air once you get the hang of it. At the same time, the Yanni does have similar downsides in terms of charging time, flight distance, and flight time. It takes over two hours to charge, can travel to fifty meters away, and its battery can last for up to ten minutes of flying time. Even with all of these faults in mind, it would be hard to do worse, considering all that you get with it. Best recommended for the more serious beginner interested in FPV drone racing. 

If you are a beginner just learning to fly with these cheaper drones, take your time to learn the controls by flying in a safe area that is a wide open space, with no wind, and no obstacles. At first, fly low to the ground until you can maneuver your drone correctly. Practice flying on a single battery charge and then let the drone cool down for ten minutes before flying more. 
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!