Where's the Line

[KenProspero]

I looked for a thread on this without finding one (but if it's there and someone can direct me to it, I'd appreciate it).

Early in a game (first or second hand)

Hero Holds AA, someone goes all in. Hero Pushes -- easy call. (No further advice needed)

Hero Holds KK, someone goes all in. Hero Pushes -- again, I've read this many times here, no questions asked.

Here's the question -- where do we draw the line.

Do you push with AKs, AKo, AQs? I'm curious as to where the consensus is on the line.

Next question (really part of the same), how does position, and how many all-in callers affect the equation.

Thanks in advance.