Looking for a king mattress

It’s time for a new mattress for the wife and I. Looking for something pillow top/conventional spring mattress. I’m 260 lbs so need something to last.

I’m leaning towards the Kirklands/Stearns and foster Costco mattress, comes in at about $1200, good reviews of soft yet firm, and not a mattress in a box.

100% against memory foam and don’t think a hybrid could withstand the test of time with my weight.

Any suggestions? Not looking to spend a crazy amount.