Hind, because I want to see what the capabilities of our enemies are... then the AH-64D because I fly it for a living haha. Would be nice to see how better it is vs what Army paid for with the simulator we have now.
If possible, OH-58D Kiowa Warrior. Should be fairly simple since it doesn't have as much system to program. As long as it can shoot and the physics is good... I'm sold.