I have three silicone pastry brushes that clean up beautifully and have met my needs for at least five years. They have been around too long to make brand recommendations. My needs may be comparatively modest, but there is probably room for at least one silicone brush in every kitchen.
Paint brushes may be a suitable, but there is always going to be the question of food safety.
Pastry Brushes. Oxo Good Grips model is highly recommended.