Keep in mind that different brands are not the same. Every brands has it’s own version of color and what that color looks like. For example; a blue color in oil is different shades in different brands. Also the texture is not exactly the same from brand to name brands. Fillers used are different as well. So, if you find a brand that you like better than other stick to one brand. The more expensive the brand is is usually better for the pigment quality too.
Mediums I work in: Watercolor, watercolor pencils, Inktense pencils, color pencils, oil, acrylic, graphite, charcoal { life drawing }, pastel pencils and as well as photography.
If improving your skills in any mentioned medium is your goal than I can teach you to achieve your artistic goals.