I like the Gatsby pens, both regular and Grande versions. Similar to the Sierra pens, but because of the "beads", they're more forgiving when it comes to body diameter. The Gatsby Grande is thicker, but the tube is only 3/8" diameter, leaving more "meat". Great for semi translucent acrylics. And like KenB, I also like the Editor/Little Giant pens. Very inexpensive kits, but people seem to really like them. I made them for some people at work for Christmas, and they were well received. The first three photos are Gatsby, the second two are Gatsby Grande, and the last are Editor.