I am not an expert in water coloring nor on supplies but these brushes are very easy to use and to create wonderful paintings with. I gave it a four because sometimes the drops come out quite quickly with not a lot of pressure. I found the colors to be vibrant and I enjoyed using them on some multi purpose Canson paper. I also felt that the red was a bit more orange than red. It did not compliment the red wine color as much as I would have liked and I had to keep trying to lighten the red in the picute with the gold stripes behind the image. I did not test them out or swatch the prior to use. I just jumped right in, so I would advise swatching them prior.
I used the red, wine, and both greens in the project I made and have yet to try the other colors but I am sure they will not disappoint.