I have been using the same watercolour set for a few years now. It's a huge Windsor and Newton set with about 50 colours and I love it, but sometimes having a load of colours to choose from can actually make things more difficult. When layering watercolours it can be hard to keep things neat, so I decided to give acrylic inks a go. I just got three colours - process yellow, process magenta and indigo. That way I'm not overwhelmed by a million colours, I am forced to mix my own.
I created the illustration below as a test and I'm really happy with how it turned out - nice and vibrant. These inks mix really well and are buildable, they have the consistency of thick watercolour paint. The only con is they dry quite quickly and cannot be reactivated with water. For the black outlines I just used regular indian drawing ink.
Hope you enjoyed this mini review. I post most of my drawings on Instagram, I'm at @art_by_nicola. :)