I put together blocks from a purchased kit that used 8 pieces. I have them finished, love them, and have some different fabric that I want to use for another. My question: Which number do most prefer and for what reasons? I like the idea of equilateral triangles that can be turned for a totally different look even if you cut in the same place. But thought maybe it looked more kaleidoscope with octagon. I may have missed a previous post. If so, please point me to it. Thanks for your help.