For oil painting, I can recommend Da Vinci paint brushes because those are the ones I have been using for many years and was always very satisfied with them.
How to choose an Oil Painting Brush
Royal & Langnickel Brush Collection - Regis Hog Bristle Oil & Acrylic Brush Assortment of 72
Top Acryl Flat Bright Paint Brushes – Monet's Art Supplies
Chinese Chungking bristles have not only become rarer and rarer, but the price has risen during the last decade. Da Vinci is proud to introduce a
Da Vinci Chuneo Series 7729 Synthetic Hog Bristle sz. 12 Long Handle Round
Da Vinci Junior Synthetic Bristle Brushes and Set
DA VINCI CHUNEO SYNTHETIC BRISTLE BRUSHES
Da Vinci Synthetic Bristles - brush series 8329 - synthetic bristles - flat - long handle - Schleiper - e-shop express
The Best Brushes For Oil Painting - Cowling & Wilcox
Artist Paint Brush for Oil Painting Set of 10 Hog Hair Bristles - Israel
Maestro 2 hog bristle 5 brush set includes series 5023 flat No.5 5123 bright No.5 5423 short filbert No.6 5923 filbert No.6 and 5723 round No.2. Shapes are deeply set in their ferrules and hold their shape after vigorous use.
Da Vinci 4240 Maestro 2 Artist Hog Bristle 5 Brush Set
da Vinci Brushes da vinci brushes 5023 maestro 2 hog bristle flat (sizes 2,4,6,8) artist brush set, black 4
Da Vinci - 5123 Hog Brush - Flat - Atlantis Art Materials
Da Vinci Maestro - brush series 7200 - white interlocked hog bristles - short flat - long handle - Schleiper - e-shop express
7 Best Brushes for Oil Painting; Top Picks for 2024
Da Vinci Hog Bristle Series 7123 Maestro 2 Artist Oil Painting Brush, Bright, Extra Fine Spring and Endurance, Art Supplies - AliExpress