Uber!
When joint problems kicked in, we thought it worth the investment to get this. Not disappointed: Both of them leapt on as soon as it was flat and now they snuggle together on this, we don't have extra beds and clutter around. I don't know if it is down to this or the joint supplements, but he seems rejuvenated and really comfortable when he gets up in the morning now, they both do. So worth the money.