I use EQ for every quilt I make no matter how simple or ocmplicated the design. I either take the block from the library or draw my own. I design the quilt I think I want and then I play with the options. I might change the block or add another block or change the color placements. I can explore an endless number of options before I cut a single peice of fabric or even buy my fabric for that matter. This way I know what I need and I know how much I might need if I decide on another option.