New to Drones which one should I buy

I need a photography drone I have it narrowed down to 3. I really want to go with the DJI brand. I am planning on using the drone to take pictures of buildings overhead and for our school yearbook sports events. Should I buy the Mavic Pro, Mavic Air or the Mavic Pro II? via /r/drones https://ift.tt/2GPRa5X