Having ended-up with a far too hard mattress, we combined this poly mattress pad and another we had, to the 2" gel corrugated gel foam topper available here, and the three in combination were endlessly better than any of two alone, and l resulted in a luxurious but solid bed surface!
However, if you already have an acceptable mattress, but perhaps the Euro-top or Pillow-top has compressed with use, this would certainly add back some of the cush you've lost...