Having had an older Sealy Posturepedic, it's reasonable to assume that the quality would be the same, when you bought your new one.
About 15 years ago, all the name brands decided that making high quality mattresses, that lasted a long time, was no longer in the financial interest.
The first thing they did, was to make one sided mattresses, instead of the two sided models they had been making since the 1920s.
Next, they started adding memory foam...which had been introduced by Tempurpedic a few years earlier.
Memory foam is without equal, thee worse upholstery material ever invented....from a consumer's standpoint.
From a manufacturer's standpoint, it's the best thing going...comfortable enough to make the sale and lacking in quality enough that mattresses will only last a few years.
In the old days, when a mattress went bad, the manufacturer's were forced to replace it under the terms of the warranty.
Memory foam, on the other hand, returns to its original shape when you get off of the mattress...or, close enough to it that will not prevail in a warranty claim.
Memory foam has created a boon for the industry and a nightmare for the consumer....making it perfectly clear that they no longer give a damn about you.
A few years ago, Tempurpedic bought Sealy and Stearns & Foster.
Shortly after that, they loaded everything with memory foam, which is when we stopped selling those brands.
They are now, nothing more than expensive junk.
Having said all that, there are a few models in the Sealy line that are referred to as Classic Posturepedics.
They are still one sided, but without the memory foam. There are only a few models in the line and they don't cost much, so they are hard to find in stores.
Here is a link where you can find one and buy it....being the closest you'll find to your old Sealy mattress.
Over the years, my wife and I (each about 225 lbs), have home tested several mattresses.
The one offering the best results...best being providing good support, comfort and longevity, is from a brands called Natura of Canada.
Specifically, the Natura Greenspring Liberty Ultra Plush...shown here:
With the coils moving independently, they contour to your body and maintain the natural alignment of your spine.
The coils are twice tempered for greater resiliency and durability...and, the upholstery is natural Talalay latex...NO MEMORY FOAM.
Latex is and has been thee best upholstery material for the last 100 years.
THIS, is the mattress I would recommend for you.
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