Not very glamorous, but hopefully quite useful. I made a tutorial on how to revive cheap synthetic paintbrushes and fix the notorious "hooked tip". : r/minipainting
Amazon.com: Best Model Miniature Paint Brushes - Small Detail Paint Brush Set - 7 pcs Model Paint Brushes for Miniature Painting, Fine Detailing – Tiny, Mini, Micro Fine Detail Paint Brushes Kits