When it comes to painting, it's useless having the colours if you do not have the supporting products - such as good brushes. This goes for makeup too.
...and [in my opinion] one of the most essential brushes to have is the pencil-style brush.
This brush is used to precisely apply colour in your crease [especially darker colours - then blending everything with a fluffy brush] and under you lower lash line.
The one I am using at the moment is by Wjcon Make Up - a very affordable Italian brand which can also be found in Birkirkara in Malta.
The brush has a white handle and synthetic bristles. and it cost me somewhere between Euro 7 / 8.
I've had it for about 6 months now and it hasn't shed any bristles at all.
You can also use the brush to apply concealer on small areas - such as on spots and other imperfections.
The only downside that I can think of is that the labeling is all in Italian - so you must ask the sales representatives to translate for you - which they will do gladly because they are all so very friendly and helpful.