DullCote really gives the Mini a Matt look, makes it go even matter than when first painted, this is excellent for showing up subtle highlights.
the downside is when a mini has a bit of shine you can get away with a few minor strong highlights, with Dullcote these will stand out a mile.
I used it for the first time 2 months ago, and would never go back. If you want a mini where every aspect of the painting is shown use it.
EDIT: Did any of that make sense??????