Earlier this year I contacted John Purcell Papers (London), requesting offcuts and example sheets that they thought would be appropriate for use with printing and book making. They were extremely helpful and sent me a pack of 9 different sheets. Each was tested with a woodcut, brushpen and watercolours.
Zerkall Smooth 145gsm - Overall best, printed nicely, appropriate feel and weight
Somerset Book White 115gsm - Too much texture
Fabriano 5 160gsm Smooth - Nice weight and feel, perhaps use reverse side
Magnani Pescia Book 120gsm - Too white
Somerset Book Offwhite - …..
Zerkall ENE Special Special Making 150gsm - Nice weight, too smooth
Zerkall Smooth - Too floppy
Japon 130gsm - Too smooth