My son tipped me off on the SAATVA line. Delivered to your door at a reasonable price. Cool cotton top vs the heat of the memory foam. We have never been so happy with a mattress (I am 62 and that is a whole drama...aches and pains start to show up). I believe the delivery contract has them, set it up and possibly take away old if you wish. We bought the middle of their 3 types.
There's tempurpedic and then there's everything else. I'll never buy anything else. The mattress industry is as slimey as they come. These new silicon valley based companies re-selling chinese junk to millenials (purple, tuft n needle, etc) aren't much better. You'll never know how good a mattress is laying on one in a showroom, and most of them aren't good for their warranties, no matter how good they sound.
Another vote for latex. We were going to build our own via site- Sleep on Latex. Started with a 3 inch topper on our old coils spring to try it out, That’s as far as our build went. Absolutely amazing for both my wife and I. We still often comment on how nice it is to get in our bed 5 years later. Latex is a little pricey but a great night’s sleep is priceless.