Hi Beth,

It is unlikely that you are ever going to get a mattress, be it latex, hybrid foam or pocket sprung, which will suit both your particular body weights.

I note that you are interested in the one product which will offer a reasonable compromise in that although the Resilience 1 is a firm mattress, it does have a topper which is 7.5cm in thickness, so should afford you a higher degree of comfort for your weight.

As far as the ridge down the middle of your bed is concerned, if your base is sprung slatted, they tend to have a dip in the middle where the slats meet in a central support bar.

This arrangement can cause the centre of a mattress to dip as this is the little used area and we would normally advise that the slats be covered with thin (3-5mm) MDF sheeting to provide the mattress with a uniform surface upon which to sit and eliminate the possibility of the central dip.

Kind Regards Gary