I bought this on year-end sale online promotion with a very good price. This book have a very good paper quality. They printed on both sides, but still okay even I color with marker and coloring pencil. I haven't try with watercolor/ poster color but I think that will be fine, too. What will be the negative point, for me, some of the drawings are too detail (complicated) so it's hard to color. I took a really long time just to finish one, but there also some simple drawing inside. This book also tookseveral sources for drawing material so this book have wide characteristic of drawing style (some have thick lines, so faded), which makes a little dissapointed. That must be better if the drawing made just by one artist.
But overall, I like it!