Dunlopillo comparison please?

We’re fans of Dunlopillo and are looking to invest in a new divan. However, having looked at the Dunlopillo website and talked to various retailers we are more confused than ever. And having read your (excellent) website we’re now really, really confused!
We bought our original king sized bed (Firmrest mattress and base with four drawers) almost thirty years ago. We then bought East 5 adjustable beds again with Firmrest mattresses around ten years ago. Our impression is that the latter mattresses are not as firm and haven’t lasted so well. The original bed is in our holiday home and this is what we want to replace. Our aim was to buy zip and link mattresses - forming a superking – which we could split in to two singles in the future. We understand that Dunlopillo have just replaced their entire range. We have been told by different retailers that: 1) Dunlopillo are no longer making an equivalent to the Firmrest – the new mattresses are all much softer; 2) The new ‘Universe’ mattress is the equivalent of the old ‘Firmrest’; 3) The quality of Dunlopillo mattresses has changed over the years and certainly in the last three years the quality went down and people have complained that they were getting softer and softer; 4) Dunlopillo no longer make a zip and link option and that customers are advised to buy two 90 x 200cm divan sets which can then be bolted together. (This last one appears to be accurate!) What is your view of the new range?
And what do they actually comprise of?
We like the firmness of the original ‘Firmrest’. Should we consider the more expensive deeper 'firmer' mattress option?
Latex has worked for us so far. I personally dislike buttoned mattresses – a bit of The Princess and The Pea I’m afraid - and neither of us are fans of memory type mattresses. Two mattresses are also good - I’m 8 / 9 stone and my husband’s around 12. We’ve been offered the two beds and bases with drawers at just under £2500 which seems a good deal (but not quite the spectacular offer it’s been made out to be!). Is the Dunlopillo product still worth the money?
Is there anything else we should consider?