I have been using DeepRoute MDF for several years, a great product with a superb face and edge finish, better than MR MDF, the only problem it's heavier than MR, I have used it with sprayed AC and pre-cat lacquer, it is also great for powder coating.
It was only available in 18mm from I think Caberwood or Kronospan, it is now available from Medite, they call it Medite Plus (Deep route grade) in 15 to 25mm.