The Army Painter Vehicle/Terrain brush has a flat stiff end which makes it great for highlighting the edges of tanks and other large vehicles, it is also perfect for drybrushing scenery/terrain to most vehicles. This brush is also great for drybrushing large monsters due to its huge size.
Wargamer brushes (white)
These brushes are selected for their perfect hair types for the stated purposes. They are handmade in Europe.