Here at AD, we're well-established sleep enthusiasts and had no problem identifying the best mattresses on Amazon. The Nectar Classic memory foam is our favorite. We chose it because not only was it tested (and loved) by multiple writers, but the combination of the perfect medium-firm support and affordable price point make it a clear winner. The rest of our choices are categorized with a focus on organic materials and hybrid styles that score high in pressure relief, edge support, and cooling benefits.