Mine will probably be my Aspiration Challenge sim's family. I am currently obsessed with that save file. He has just had twins with his wife Lillian Vatore and they already have a toddeler. He only needs three children for his family aspiration so he doesn't really need a fourth child but I just don't know if I can stop playing him. If I do decide on a different save file it will be whichever couple is up next in my Legacy rotation.