I did a lot of research about which mattress in a box I should get. I finally decided to go with Tuft & Needle and I am so happy I did. It is unbelievably comfortable! Absolutely no complaints here. I have been recommending it to all my friends and family.
After sleeping on a famiy member's guest room T&N mattress we bought one & love it. We made a mistake in size ordering and had to exchage our Cal-King for a King and the local store was wonderful about making the return and replacement. We plan to soon buy another T&N for our guest room bed.
We were told we would find this mattress too firm for side sleeping, but three years in we are still happy with our purchase. My only complaint is that I've found all my sheets to be too loose since this is a relatively thin mattress. I suppose I could add a topper, but have been hesitant to do so since we like the firmness of the mattress.
My daughters love their new mattresses, they said there much more comfortable than there old mattresses and that they have a much better sleep, and wake up in a better mood. A++