https://www.youtube.com/watch?v=jtBv1HZK0k4According to this wealth mgmt company founder, age 67 is best.
He runs the #s at age 62, 70 and 67. (Starts 5:30 mark)
Age 67 has a slightly better chance of keeping your standard of living than age 70. (Assuming you're also drawing from a nestegg)
Obviously, when should you collect depends on your financial and health situation.
oh, if you choose age 70, you need to live past age 78 to breakeven over choosing age 62.
edit:
my strategy of File and suspend has been disallowed since 2016.
Thx reeshau