Fuxi
Fuxi 9x12 Spiral Sketchbook
Best for: Students and daily sketchers practicing with pencil and charcoal

String & Space
A hardcover sketchbook with 40 sheets (80 pages) of thick 200gsm paper, 5.8 x 8.5 inches, wire bound so you can draw in landscape or portrait.
Best for: Sketchers working in charcoal, pastel or watercolor who want thick paper
The String & Space 200gsm Hardcover Sketchbook is a 5.8 x 8.5 inch wire-bound book with 40 sheets, or 80 pages, of 200 gsm paper that the listing calls very thick. The listing says the wire binding and hardcover let you draw in landscape or portrait.
String & Space lists the paper for charcoal, colored pencil, oil pastel and watercolor, and sells it as no-bleed-through paper, so ink does not leak to the next page.
Based on the manufacturer's Amazon listing.
String & Space calls the 200 gsm paper very thick.
String & Space sells it as no-bleed-through paper, so you can write or draw without ink leaking to the next page.
The listing names charcoal, colored pencil, oil pastel and watercolor.
The listing says the wire binding and hardcover let you draw in landscape or portrait.
The book has a hardcover, per the listing.
The pages measure 5.8 x 8.5 inches.
Look elsewhere if: you want the same paper in a larger book. The String & Space 200gsm Spiral Sketchbook lists 8.25 x 11.4 in pages.
String & Space 200gsm Hardcover Sketchbook
Choose it for: The same paper in a smaller book
String & Space 200gsm Spiral Sketchbook
Choose it for: The same paper on bigger pages
MOFUNY Mixed Media Sketchbook 9x12
Choose it for: More sheets at 9 x 12 in
Fuxi
Best for: Students and daily sketchers practicing with pencil and charcoal
Soucolor
Best for: Kids and students who draw every day or need a pad for art homework
Moleskine
Best for: Sketchers who draw in pen or pencil and want a pad that fits a pocket
MOFUNY
Best for: Mixed media artists and art students who work in several wet and dry media