Has anyone with a cervical injury tried and had success with these mattresses?

I'm not a fan of memory foam but I think maybe in addition to other mattress springs and or layers that it can be positive.

I would not recommend the Tempur-Pedic for the long run for anyone who dislikes sinking into a bed. I'm taller and thin (6 feet/135) and I still sink considerably in a firm Tempur-Pedic. This has made rolling difficult.

The purple mattress looks to have some of the benefits of pressure relief but also some bounce/spring.

All thoughts are always welcome.

Purple: https://purple.com/
Casper: https://casper.com/

Comparision: https://www.youtube.com/watch?v=k4GJz1EXX3U