Getting the correct type of paper is extremely important. It must be the Strathmore, 300 Series, Bristol with the vellum surface. Accept no substitutes!
Watch this video to find out which sizes of tablet to buy and more.
Update from Strathmore: All of the 300 Series Bristol Vellum paper is 270 gsm (100 lb). If you see 260 gsm, it is a misprint and has now been corrected.