Hi D Ward,
 
Thanks for your question. 
 
At your body weights we would match you both with a Medium spring tension to give you the correct level of support;
 

 
We would need to know your sleeping habits and preferred feel in order to make recommendations on our own models. Side sleepers for example need to avoid anything too firm in the upholstery and front sleepers need to avoid anything too soft. 
 
Similarly, you disclose that your current mattress is firm but don't disclose if you get on with it or whether you like the firmer feel. 
 
Usually you can't go wrong with a medium feeling model like our Origins Pocket 1500 or Artisan Naturals but we'd need you to come back to us to disclose the information above in order for us to make an accurate recommendation. 
 

 
Our office can be contacted on 0161 437 4419.
 
Kind Regards, Lee.