Hey Mick,
The issue we have is that the foam has gone quite soft where it is used all the time! Ie common sleeping positions, wifey says its knocking her back around.
I find the springs to be too pronunced in the matrees and can feel them quite alot, for a thicker mattress, I would have thought that they would be more comfortable. The Eagle's foam mattresses were much more comfortable than the inne spring mattresses we now have.
My two bobs worth.