I love to paint with watercolors but sometimes I just don't want to deal with setting everything up and then cleaning it all up. So I decided to try watercolor brush pens and I didn't want to spend too much as I wasn't sure if I'd like them so I bought this set of 20 brush pens. Well turns out I love them! I use them with good quality watercolor paper and a water brush and they work great- I can paint anywhere now without all the fuss if I'm not up to it- I often just sit on the couch and do small paintings with these. They blend very easily on watercolor paper but not very well at all on other types paper (including multimedia). I liked these so much that I just went ahead and ordered the set of 48. I honestly think these are a good deal for the money but the set of 48 is an even better deal.