I'd never tried Prismacolor Markers before these. I got the 12 piece set, because I figure I can buy more if I want them, individually. These markers are skinnier then I thought. They are very inky! I tried them on Bristol Board (smooth, 100 lb weight paper) and there was bleed-through on the back! I don't have the colorless blender yet, it is coming in the mail, so I can't comment about that. These markers don't streak too bad. I had to apply 2 coats of each color on my picture to achieve smooth coverage. Possibly, I don't know the proper technique with markers? These are nice markers, and I hope my set lasts me a long, long time! Very pleased.