Yes, there is a lot of information on this subject!
I'll just tell you what we planned (as of this moment). We're both the same age. I retired last year at age 59; my wife was to also retire then, but has yet to since she is not "emotionally ready".
Our plan is for her to file at 62 (her age 62 benefit is roughly half mine if I would file at 62). I will not file, but wait till she turns 66 (her full retirement age). At that time, I will file against her SS, thus receiving a 50% benefit check from "her account".
At age 70, I will file (and drop my claim against her).
Result? Assuming we both live to 70 and I pass first, she will get my full age 70 benefit, which will be approximately 3x her age 62 benefit. And from age 66 to age 70, I'll get some "free money" (OK, not free - but that's what I call it since it dosen't infringe on her, or my future SS claim).
You will read much on this subject (including "draw early / pay back later and refile"). It all depends what works for you, and of course that's all that really matters. It's your life, your money, your decision.
- Ron