The Emma mattress is highly rated by not just us, but many customers. If convivence is what matters most, then Emma is the best box mattress that can be delivered straight to your door, unwrapped, and expanded in one day. Our tester Chiana was instantly impressed with its support, given the price, and that it's a lower-quality box bed. If you're a back sleeper especially, this medium-firm bed is springy and responsive, bouncing back to form when switching positions or getting up. It's also soft enough to cushion any joints – our tester found the bed to reduce her joint pain.
It's also always on sale. It retails at $1399 for a queen bed, but the Emma is often on sale for around $699. Combined with a 100-night sleep trial and a 10-year warranty, it's excellent value.