We just moved to Florida last year from Pennsylvania. when we got here - we bought three new beds and mattresses. Two queens and a king
I always heard that 100% pure latex mattresses last forever and are very supportive. Do a google search on pure latex foam mattresses - read about them.
We bought them from this firm -
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They sold us 3 full beds - rails - box spring - mattresses. Two queens and a king. Total price $1700 delivered to the house. After a year I can tell you it was a great purchase.
Do not let anyone sell you on memory foam or space foam or anything like that. 100% pure latex foam has many great properties. It is hypoallergenic - it cools you in summer and warms you in winter. It resists dust mite.
We have been sleeping on them for a year and love them. They are supposed to last 20 years too. Beware - pure latex foam is very heavy. It also is not stiff - the mattress will not stand up vertical by itself.
We bought them because we were staying in a five star hotel in Europe and absolutely loved that mattress there - so we went looking for them.
100% pure latex foam rubber mattresses. Any brand will do if it is 100% pure latex foam. Caution - watch out for "race track" foam mattresses - they wrap polyurethane foam around the edge.
Harry
Harry