The answer is simple and complex. I use a multitude of brands.
Here is most of my collection.
Some of the brands I use:
Caran d'ache Pablo
Prismacolor
Prismacolor verithin
Caran d'ache Luminance
Koh I Noor wordless colored pencils
Faber Castell Polychromos
Koh I noor Polycolor
Sanford Colorific
Blick Studio pencils
Utrecht colored pencils
Mitsubishi prussian blue
And I plan on getting more pencils from different brands! Theres probably some brands I've even missed!
I've amassed this collection over the years through curiosity and self guided research. My goal is to make art with these pencils, of course! I have years of experience with pencils and art materials. (Probably close to 20 years.)
I have secondary goals: to find the most archival pencils, to be able to describe the qualities of each brand I come across, and to share that knowledge with people!
Since I'm often on the move, I store my pencils in a handy plastic zipper art bag, with other materials I use to make colored pencil art.
I draw everything from illustrations, to reproductions of paintings, to abstract art, and even my comic art.
Colored pencils are NOT the only medium I use. But they sure are fun, and to get started with them, you only need about 8 to 12 pencils!
I hope to share more of the knowledge I have acquired over these years really soon!
Ffn
-JT