I have this with a topper I picked up from Kohls. The topper makes it a little too soft at times, but the lady likes it as when you are tired, you sink in slightly but the support is there for your back. Its a godsend on heavy volume leg days full of squats, deadlifts, and hack squats.
Picked it up from El Durado for $760 on sale.
https://www.sealy.co.uk/beds-mattres.../catania-2600/