FWIW, I’ve had 3 of these mattresses in medium.
First was a King. Loved it. A couple years later I moved into a smaller house and didn’t want my room to be 95% bed so I sold that one and bought a queen size. That was about 3 years ago. Still going strong. I’m very good at rotating it about once a month.
Son got one around the same time I got mine. He’s also very happy with it.