Personally, I like this type of OBW quilt best when each of the different "color" hexagons are spaced (roughly) evenly over the quilt. In particular, I like it when the nearly identical hexagons are not near each other. With spacing out the different "colors", I feel like the hexagons seem better defined; when a lot of similar hexagons are close together, I feel like they can sorta "mush" together.