JusArt
JusArt Water Brush Pens (6-Pack)
Best for: Urban sketchers and water-soluble pencil users who paint on the go

Soucolor
A pad of 40 sheets of 9 x 12 inch, 140 lb (300 gsm) cold-pressed watercolor paper, acid-free and glue-bound so pages come away cleanly.
Best for: Painters of all levels working in watercolor, acrylic or mixed media
The Soucolor Watercolor Paper Pad holds 40 sheets of 9 x 12 inch, 140 lb (300 gsm) cold-pressed watercolor paper. Soucolor calls it heavyweight paper and says it is designed to absorb water without bleed-through.
The paper is natural white, acid-free and pH neutral, with a slightly textured cold-press surface. The pad is glue bound for clean page removal, and a thick cardstock cover and heavy backboard protect your work.
Based on the manufacturer's Amazon listing.
Soucolor calls the paper heavyweight and says it is designed to absorb water and prevent bleed-through.
The slightly textured surface is what the listing credits for its suitability for watercolor techniques.
A large sheet count gives room for daily practice, color charts and studies.
Soucolor says the sheets keep colors vibrant and resist yellowing over time.
Sheets come out cleanly for framing or sharing, and a heavy backboard gives a firm surface to paint on.
The listing names watercolor, acrylic, colored pencils, graphite, pens, markers, charcoal and pastels.
Look elsewhere if: you want a smooth surface for detail. The Fabriano Studio Hot Press Pad has a hot-press surface and 50 sheets.
Soucolor Watercolor Paper Pad 9x12
Choose it for: The most sheets of the three
Hapikalor Watercolor Paper Pad 9x12
Choose it for: A smaller FSC-certified pad
Choose it for: A foldover-bound pad of 30 sheets
JusArt
Best for: Urban sketchers and water-soluble pencil users who paint on the go
ABEIER
Best for: Beginners and students trying gouache on watercolor paper or canvas
DOODLE HOG
Best for: Beginners, letterers and illustrators who blend with water brushes
Hapikalor
Best for: Art students practicing watercolor and mixed media techniques