Different insurers estimate different replacement costs for RCV insurance

[Tarun Kapoor]

I just bought a fourplex as an investment property for $300K and am looking to get RCV insurance on it. I got very different quotes from State Farm and American Fam

Statefarm came up with a replacement cost of $525K and an annual premium of $4,200. American family came up with a replacement cost of $400K and an annual premium of $3,500. For the sake of simplicity assume 0 deductible for both. I think Am Fam is better because of the following logic.

In case of partial loss, I will do the repairs and Am Fam will pay me whatever it costs me to repair.

In case of full loss, I would not rebuild a fourplex. I would build a SF which I can easily do in $400K and can sell it for $400K.

So, by this logic I feel like Am Fam is better in case of both total and partial loss but I am not 100% certain. Does the lower replacement cost estimate make Afm Fam worse?

Thanks a lot in advance.
TK