I'm going admit that there isn't a whole lot of information provided on the Internet in terms of adjustable beds in general.
In my opinion, you should never buy mismatched changeable or electric adjustable mattresses meaning that you should not purchase the bottom and the mattress separately,Amerisleep information available online
mainly because adjustable or electric variable beds are very different from a single style to another.
Because a variable or electric adjustable bed is a relatively large expense you want to purchase the adjustable or electric adjustable bed you got it for you.
You want a bed that fits you your comfort level and some bed that you will feel good regarding. Mixing and matching will not be worth it for the couple of dollars that you will save.
That you are better served buying the basic and mattress together considering that the base is built for the specific mattress that comes with the changeable or electric adjustable bed.