I actually like both and use both brushes differently. When I want a defined wing, I feel that the 266 brush gets the job done perfectly. But if I just want a nice, thin straight line, I prefer the 209 better. Then my 266SE also gets the love, as my brow brush. This feels too stiff for my eyelid but it's stiff enough to contour the brows and bendable enough to shade and blend shadows for my brows. HTHS!