Best eyeliner brush?

[FrustratedFrugal]

I like to apply eyeliner with a brush but there must be a better one out there. Which brush is your favorite?

My favourite one ever is approaching 20 years old... it's from Benefit and it's an 09 angled brush. Think it was originally supposed to be for brows but it's amazing for eye liner, just the right balance between firm and flexible. Looks very similar to their current hard angled brush, except mine has a grey handle and (possibly slightly longer) beige bristles.

Mine is a fine paintbrush from an art supply shop. Art brushes suit me better as the bristles are longer and IMO they are harder-wearing.

I'll second the art shop suggestion.

Better and cheaper too.