I ran across this on my search for toppers.

http://www.brylanehome.com/decor/Natura-Latex-Mattress-Topper.aspx?PfId=94697&DeptId=15184&ProductTypeId=1&PurchaseType=0

It's a 1" latex mattress topper for $64.95, which is vaguely described as "medium" firmness, at Brylane Home. I was wondering if this might be a good place to start as far as getting a comfort layer for a very firm innerspring, since it's not very expensive and it's returnable. Does anyone know what "Natura Latex" is? Is there anything that makes it look like bad quality or...?

BTW, if anyone else is interested in these, be sure to do a search for promo codes, cos there are various ones that would either give you free shipping or a percentage off.