Buying mattress confused which one to buy?

Hello Friends,

Hi friends, Recently we did a lot of research on mattresses, finally we liked two mattresses, one from costco which is king sealy postuerpedic by sterlingshire firm. Other one is from macys which are simmons beautyrest vanderbuilt collection adrian firm. We are very confused. Both mattresses have nearby same amount of coils so my question is, which one is better for the long run? Simmons beauty rest or sealy? If anybody expert there please help.

Thanks
Michael Bevan