I invest in number 4. Heavily.
3 and a half minutes and 44 turns. Worth it.
Can't wait to do it with spies, infantry, jets and sams and ships. Spies 270 turns. Infantry 44 turns. Jets and sams 127 turns. Ships 218 turns.
I'm sorry if you people are irritated by this. I sell voluntarily in this way, obviously i'm not annoyed by it. But you have to buy like this .