dkbit98 is correct, stainless steel ll is cheaper and easily accessible that metal steel. However, I will say that because of this natural disaster, it is better to have your seed phrase back up in three different location very far from each other. Maybe in three different states, but let it be with someone you trust very well. I don't think that natural disaster can occur in different far places at the same time, and from there you can retrieve your seed phrase from the other locations.