Rather than make a new thread discussing the same thing, I'm going to revive this one.
I recently received an order of Derivan MiNiS from fozzbozz.com (great service and quick shipping by the way) and the following are my thoughts after a quick test session last night:
The pigments are very good and cooperate well with the binder. When dilluting with water, the pigmentation stays consistently distributed throughout.
The colors mix easily and well together. This at least is one advantage over Vallejo Game Color (my other paints of choice). The Vallejo's take considerably more effort to mix evenly.
The Derivan MiNiS dry ultra matte. As phovsho said. I have not tested their durability extensively, but they seem to be no less durable than Vallejo Game Color paints (which are quite durable in my opinion).
The dropper tops are a plus with Derivan MiNiS in that you never have to actually remove a cap. Turn the top right or left to open or close. So this cuts down on putting a cap away and putting it back on (it also means that paint cannot collect inside a cap, which often happens with my Vallejo Game Colors).
Since the pigment seems very evenly distributed within the binder, they don't require nearly as much shaking as Vallejo paints before use. In fact, my paints arrived very mixed in the bottles. I could not see any separation in the bottles when they arrived, nor after many hours of sitting on the shelf.
The metals seem so far to be on par with GW's and Vallejo's Game Color line. I have not tested these extensively, but I did try thinning them and applying them over black.
Coverage is in my opinion 'just right'. They are very good for doing multiple layers of semi-transparent shades and highlights.
They cover well without being dilluted, about as well as Vallejo Game Color or GW, but since they thin more consistently and the pigment is so fine, they layer better.
Drying time seems to be on par with most acrylic miniatures paints.
So far I'm very impressed. For the price per ounce, Derivan MiNiS are a solid deal and I would encourage any painters who like to explore their options to pick up at least the primary colors to try them out.
I expect to receive some of Reaper's new Master Series paints within the coming weeks and will post a review of them and compare.