Hello- New to quadcopters and quite clueless. I'm trying to figure out which will be the most reliable to use for a Search type application. When a person goes missing often we need to check in ravines, along inaccessible creeks, and the like. We don't presently have a Drone team, but I see it being a great resource. Also, we are all volunteer so cost is something I have to consider. We wouldn't need so much to record video, but taking photos and actually having a FPV when searching is a must. A longer battery life would be a plus. Suggestions?