It’s best that you don’t know what the rating of a mattress is until after you have tested it. As we will all make up our own minds as to which one of the three ratings we think it is. I so often speak to people that think our softest mattress is our firmest. And that our firmest is one of the softer ones. Firmness ratings are only a guide. We all feel things differently. So you decide your own ratings and then choose the one you like the most.
So the best mattress for you, is the one that you feel to be the most comfortable. You will have to invest your time in testing them out. But when you’ve found the right one, you will wish that you’d done it all sooner.