Hi hayden,
I’m not familiar with either of them but they both seem strong enough (although the Sleep Science doesn’t mention a weight rating, I’m assuming it would be similar).
You can read my thoughts on solid surface platforms in post #10 here and I personally would choose one of the slatted wood KD foundations that are similar in price that are listed in the first post of this thread unless there was a specific reason for choosing one of the ones you listed that you decided was worth a some additional risk.
Phoenix