I will be primarily hunting in Texas. Shots anywhere from 50 yards to 200 for whitetail and hogs. I want this to be the most versatile scope in case I want to go hunting for big game up north in higher elevations and longer shots. I am currently between the 3-9x40mm and the 4-12x40mm. I had first considered the 50mm for the 3-9 but would rather spend the extra money on added magnification than extra light. I am still confused on the AO and whether I should get this for closer hunts or longer range hunts? As I said before, this will be my only scope for a long time so I need it to work in all conditions. Looking forward to hearing the responses.