Thanks for taking the time to provide this in-depth information for us to be able to help you, I will certainly try my best to help you out!
As you are experiencing back pains this would suggest that you aren’t being supported enough by the spring system that you are using (may not be firm enough). So you are absolutely correct in looking at the Origins Pocket 2000.
This at the given height and body weights you have provided will provide yourself with the right support.
|Upto 8 Stone / 50kg||Soft
|8-16 Stone / 50-101kg||Medium
|16 Stone / 101kg Upwards||Firm
This will, however, in turn, be too firm for your wife at her body weight.
The Origins Pocket 1500/2000 zip and link would be the most suitable option for you both to both be adequately supported by the springs. This would still then give you a medium comfort layer.
If you did not want to go to the zip and link option, then you could take a look at the Artisan Naturals. This range of mattresses allows you to have a medium/firm spring support that is required for you both in a one-piece mattress. The Artisan Naturals is a good true medium mattress in the comfort layer as well and being 85% natural fibre, it is also very breathable.
What we usually do is to ask the customer to go and try;
Vispring Devonshire – Soft in upper layers – Comparable with the Artisan Luxury
Vispring Regal Superb – True medium in upper layers – Comparable with Artisan Bespoke 004
Vispring Herald – Firm in the upper layers – Comparable with the Artisan Bespoke
From there if you get back to me with how you got on, I’ll be able to point you in the right direction.
I hope this helps if you have any further questions please don’t hesitate to contact the office on 0161 945 375