does your software allow you to remove the outlines of the blocks and patches? my EQ does with a right click on the quilt picture. i think if there were a view that way, it would help with the decision. since it is only black and white fabrics, the outlines make it look like there is an additional design around the blocks. the sashing will float the black background blocks from each other. not sashing will give it a 'harlequin' look. for borders, i like the lighter one, without the wide black.