The best mattress I ever slept on was a single size V-spring some years ago, I can never afford a V-spring King size so when my daughter told me about your mattresses I looked into it very carefully, I found that although not identicaly made I made the decision to buy one of your mattresses. Positive points. Very quick delivery. Mattress was Taken to our first floor bedroom by delivery men. The mattress is very heavy just like the V-spring which gave us greatConfidence in our purchase as the two mattresses are very close to be made the same in our eyes. Both my wife and myself are heavy people and we suffered with aching hips when lying down, after using our new mattress from day one this problem has gone, wow what a fantastic experience to lay down and sleep with no pain, unbelievable relief.The medium / firm is excellent. Comfort 10/10 Material 10/10Quality of workmanship 10/10This mattress is superb value for money, nothing more to be said except that two more members of my family are in the process of purchasing one. I would highly recommend this mattress and manufacturer.