Hello!
I use Winsor and Newton Professional colors and Holbeine! Artist watercolors. Do not need many tubes. 5 to 7 are enough.
For watercolor, to use a good paper is important, I find.
Discussion
Hell yeah! I love the way yours look. What paper do you like?
oh yeah, Windsor and Newton make really nice "watercolor pencils" which let you draw like pencil and then watercolour them into more wispy, dreamy stuff, definitely recommended to get some good fine brushes for watercolour pencils