I've read some of the end grain discussions here. Let's have a comparison discussion. I just purchased my first large solid maple cutting board. It's an edge grain board. Beautiful and of the highest quality. I've since began to wonder if a board with end grain construction will help save my knife's edge, and to what degree of difference it will truly make. My theory is this: A high quality edge grain board will outperform any lower quality end grain board. Is the upgrade worth it? End grain construction is decisively more expensive. Anyone with experience with both?