I used the blendabilities on this image from the Today and Every Day set. This set is so stinkin cute! I tried to use a rainbow of colors to show off the depth and brilliance of blendabilities. I am very happy with them (I am a long time Copic user) and the only thing I do not like about them is that they are not refillable. However, when we went to convention, the product manager in charge of blendabilites said they were looking into that.
Right now to make them more affordable for everyone they are not refillable. If enough people like them and ask for it, even though they may cost a bit more, they may just decide to make them refillable. Hint, hint……