Comparable mattress to the Relyon Heritage Status Mattress

Hi
I am looking for a new ing size mattress and divan set and my wife and I like the Relyon Heritage Status Mattress also know as the 'Cavendish' on some sites
Specs of the mattress are:
2400 Pocket Springs - . The upper layer of springs shape to the body contours while the lower layers absorb changes in weight distribution for the ultimate in comfort and support.
Hand Teased Fillings - The traditional craft of gently separating fibres by hand enhances the inherent attributes of natural fillings. This meticulous process ensures an even distribution of fillings, giving an opulent feel.
Horse Hair - Horse hair provides a durable insulating layer of natural resilience and luxurious loft and gives optimum support.
Lamb’s Wool Layer - Lamb’s wool is used in this mattress as a soft and insulating upholstery layer for added comfort. Lamb’s wool is a natural insulator providing coolness in the summer and warmth in the winter. Offering superb comfort, it also has hydroscopic properties encouraging the evaporation of body moisture.
Cotton Layer - A cotton layer with responsive properties that complement the spring unit is added to the mattress to help provide a comfortable feel.
4 Rows of Hand Side Stitching - Traditional hand-side stitching which secures the outer springs to the border at the top and bottom preventing roll-out and is the most highly skilled and labour intensive of all the operations. Side-stitching is carried out by senior upholsterers using traditional long needles and twine to make borders and edges stronger. The effects on the mattress are quite dramatic preventing the springs from distorting and extending the sleeping area right up to the edge of the bed to make the borders and edges stronger.
Anti Allergenic Layer - A layer of anti-allergenic fibre underneath the mattress fabric cover. This layer is sterilised and dust free, therefore ideal for allergy sufferers.
Silver+ Anti Allergy Protection - Silver+ is an anti-bacterial protection. Silver+ is a coating based on microparticles of silver ions. Silver+ combats and dramatically reduces microbial growth providing a fresh and hygienic fabric.
But on searching the interent I found your site and have been really impressed by the information you give. Do you think the Reylon is a good choice and value for money or do you have a comparable model that would be as good or better. The Reylon Divan set is around £2500.
My wife is around 12st and myself 16st. She like s a firmer feel mattress where as I prefrer a medium/firm ( at least that what the mattresses say in the all of the shops we have been around that seen to suit me, but every manufacture seemed to be different, some firm mattresses were sofeter than some marketed as medium, so confusing!!! ) I don't like the idea of split tension and want a set tension across the mattress. Do you have anything that would match.
Many Thanks