Wisdom Of The Hidden Realms is beautifully illustrated, it's all been done by a single artist whereas Earth Magic uses cropped portions of different people's paintings. However, I have found Earth Magic much easier to read so far, the images based on the natural world give me many more ideas than the "people" in Wisdom and fit together better to form an interpretation. The author appears to have been careful in his selection of images rather than just throwing together what he could get hold of and there plenty of details to work with. I'm going to persist with Wisdom though; I'm learning more from a particularly good reading with it that has just been done for me. As the two decks look visually similar with the arched design I'm also going to do some readings using both of them together - draw one card from each for every position and see how they interact.