I recommend the Aritaum eyeshadow brush.

First of all, considering the affordable price, the eyeshadow applies well and doesn't cake, so I think it offers really great value for money. I've been consistently stocking up on this and using it for years. I've tried various cheaper or budget-friendly products, but I always end up coming back to Aritaum. My eyelids are a bit puffy, but I love how the eyeshadow adheres perfectly to my skin.