Lots of people ask what type of sketchbooks to use when they aren't using Zentangle tiles.
I love Canson Mixed-Media Sketchbooks of varying sizes. I find anything less than 98 pounds doesn't shade well. It feels like the paper will tear when I'm shading (and I love to shade). Also if the tooth is too light - then it smears instead of holding the shading where I want it. I stick with sketchbooks that closely mirror the weight and tooth of Zentangle tiles.
I love my Sakura Pigma Micron Pens:
And find that I use the 01 size the most (but I use all the sizes and love the brush).