Actual Cash Value vs Replacement Value Insurance

[James Maher]

Are there any kind of formulas typically used when determining if you want your landlord policy to cover replacement cost vs actual cash value?

I am looking at 6 properties right now.  On some of them, my purchase price is significantly lower than the actual cash value.  Also, the cash value on some of them is much lower than what it would cost to replace.  I'm just trying to get a general feel of what most people do.