I've written this before but it is worth putting up again, the Monique Chassain guide has wonderful maps and historical/spiritual explanations and may be trusted except for lodging and food where it is sadly outdated and in all probability will not be updated in the near future - it cannot be trusted on these issues. Lepere Editions is written for hikers not pilgrims, the explanations are adequate the maps are excellent, and lodging and food may be trusted. However, the authors will re-route one in order to avoid asphalt or a town always seeking another country lane, another muddy forest track, another cow pasture in order to increase your enjoyment. When using the Lepere Editions a day's march between the same two villages may require another 5-10 kilometers in order to complete-not bad now and then but over a month it is a considerable bit of additional kilometerage.. Thus, the two chemins do not always overlap; M. Chassain and the local confraternities will rely on the Red/white stripes of the GR route and not put up their own when both cover the same stretch-confusing at first but when the GR forks off for yet another meadow, the Chassain shell reappears. I used them both, consulting both daily and choosing according to my personal whims, the addition time required, the beauty of the longer way, and by how much I was tired, a daily responsibility. Not as difficult as it sounds but indeed a worry.