I've tried the Charatan Flake, Black Flake & Rolls.
I never tried Dunhill flake (although I do have a few tins in the cellar) so I can't compare it to the Charatan version but I do know I liked it very much and found it a medium virginia with a slight lemon topping and a spicy flavour, I would add the caveat that my pallet isn't to the level of some on here who can taste this & that in a blend and write an informative review so please bear that in mind.
The Charatan Rolls are not like DNR (which I tried a few tins of and loved) because they have a cavendish core so to me taste quite different but again I'm really enjoying them.
The final one I'm trying is the Charatan Black Flake and this I'm not enjoying as much as the Dunhill original, I found Dark Flake had more flavour and the Charatan version is a little harsher and not as smooth. I really loved Dunhill Dark Flake so in my eyes the Charatan version had a lot to live up to and didn't quite reach the level of the Dunhill original but once again I still found it a solid enjoyable vaper that I will buy again.
So in closing I enjoyed all 3 blends I tried and would definitely say that they are worth trying, although they vary in how close they are to the Dunhill originals to me they all taste like they are made with high quality leaf and I will definitely be buying some of each to cellar.
Chris