Additional questions on your mattresses please Mike.

Firstly thank you for answering my question regarding the Relyon Monaco and advising of suitable mattresses within your range and wondered if you could give me further advice please.
I have indeed looked at the suggestions you suggested Artisan naturals, bespoke and 004 and have also telephoned yourselves not so long ago with regards to the Luxury and was advised to go and look at a VI Devonshire which we did and didn't know if it would give enough support for our body weights 11 stone and 13 stone although it was nice and cosy so to speak and unfortunately Vi stockists our limited here, not sure if they had the regal or herald but they did have a £8000 one in the showroom :-/ . I am going to buy from yourselves as like your honesty compared to other high end brands, although it can be quite distressing for us swopping and changing until we get it right and certainly is not fair on yourselves as a manufacturer in my opinion hence the reason for a few more questions please.
Am I better buying say the Artisan Naturals for example and changing every 5yrs say for optimum performance compared to buying the Bespoke 004 like having to mattresses for the price of one or is this false economy.
Would the Artisan Luxury not give me the support in medium tension with the soft feel like a cloud feeling i.e sleeping on a soft hotel mattress feels nice for a few nights but the then leads to aches and pains. Also what about settlement would this show more.
From the recommendations you gave me which would be the softer/comfort feeling of the fillings Bespoke 004, Naturals or the Bespoke 002. I may have answered my own question here.
Am I right in thinking the higher (height) of the mattress is indeed down to the springs and not the fillings as previously thought the higher = more fillings
could you give me the heights of the mentioned mattresses to please.
Could you tell me please the crucial benefits of genuine Calico springs.
Lastly I will be wanting to use a topper possibly wool for protection and a additional comfort layer (another reason I think the Artisan luxury may be out)From your site I believe it was you that used 2 separate toppers and one of them microfiber ......is this a hot feeling topper . also do you recommend mattress encasements i.e protect a bed or are these just ploys of the trade.
Thank you so much for your advice