Quite simply the pinnacle of cutting board design.
These are the best of the best. End grain cutting boards and chopping blocks are are the most durable in design and function. With face grain boards and even the superior edge grain cutting boards, your knife cuts across the wood fibers. With edge grain cutting boards you cut into the grain. The fibers will separate with the knives application and then return to their original positions when the blade is withdrawn. The edge grain cutting board's durability is much greater--and they look great.