Some can be really good. Another big difference is live video from the heli. That means you can tele-operate it beyond line of sight if you have good enough ra

Some can be really good. Another big difference is live video from the heli. That means you can tele-operate it beyond line of sight if you have good enough radios. GPS waypoint following is also essential when going out of line of sight. You can see how the platforms grow in complexity and cost just to be useful at all.