Help.....what mattress do i buy for hip OA pain?

hi guys ive had one hip replacement and im 34 ive now got a sore hip the other side and need a new bed . …any suggestions?
simba?
eve?
emma?
or any others?
i need a fairly firm bed and im not skinny but not obese so not a thin mattress.
any suggestions welcome
xx

I’m not sure if I can help. We have a very firm mattress. I had THR 8 months ago. I bought a memory foam topper, egg crate type and on top of that I use a down altrnative mattress pad/cover. It helps alot.