We’ve only had our current on, a Hypnos, for 2.5 years but it has developed a huge saggy dip - tried to claim on warranty but they have rejected it because we admitted we didn’t rotate it EVERY WEEK for the first 3 months. Which is plainly ridiculous so I won’t be buying Hypnos again.
Need a Kingsize, don’t want to spend more than £500. Prefer medium firmness. No particular preferences other than that. DH is a side-sleeper and I’m a ‘moves constantly’ sleeper, but mainly side. Our bed is a divan if that’s relevant.