Two things in this particular back splash detail make it more interesting visually.
First, the client chose 3 x 6 tile sizes instead of the typical 4 x 4. We installed the tiles in a brick pattern. The by-product of choosing 3" high tiles instead of 4" was to save the client the cost of re-locating the outlets.
Second, visual interest was added by including the mosaic. The mosaic includes elements of recycled glass and natural stone. It is relatively inexpensive.