[quote=“Phoenix” post=59914]Hi d3adrock,
Every layer and component in a mattress will affect the feel and performance of every other layer and the mattress “as a whole” so changing one layer would be enough for most (but not all) people to feel a difference. The only way to know how much difference you would feel will be based on your own careful testing or personal experience.
While it would depend to some degree on where you are in the “I can sleep on anything” to “princess and the pea” range … once a mattress has softened to a point that it is outside the comfort/support range that is suitable for you then you would probably feel any related symptoms fairly quickly (within a day or two).
If a mattress is “on the edge” when it is new then it can sometimes be a matter of weeks or months (sometimes even during the initial break in period … see post #3 here) before you begin to notice some symptoms that are related to a mattress that is too soft.
Phoenix[/quote]
So do you think it is impractical to get a F/M/S to determine more or less what a F/M/M would more or less feel like in order to get a better idea of weather I should go firmer or softer?