With the current edition, Michelin reorganized this Green Guide around driving tours of the region, rather than the previous organization that listed towns alphabetically. Reviewers have taken two distinct stands about the new organization: some like it, some don't.
We used this guide on a recent two-week tour of the region. Our opinion: the new organization works and works well! We found it helpful in pre-planning our trip: suggested driving tours within the region really helped us to pick-out and organize areas to visit. Never having visited the southwest of France before, it would have been much harder to plan our itinerary from an alphabetical list of towns. The new organization also works once "on the ground" in the region. It is most convenient to have towns and villages in the same area grouped together. It really helps with the flow of the visit.
Beyond the organization, this regional guide seems to strike the right balance between breadth and depth of coverage. Other guides (e.g., the Lonely Planet guides) tend to provide more detail at the cost of a bulkier book to carry with you and probably too much to plow through when planning your trip. Other guides tend to skim the surface and miss too many of the interesting places not far off the typical visitor route. The guide covers the region well, provides a glimpse of the history of each region adding to one's appreciation, and does provide pointers to some of the out-of-the way places that we particularly like to visit.
Michelin does have a specific target tourist in mind when they recommend places to visit and even more so when they star-rate sites (interesting, above average place to visit, don't miss). Some of the major tourist sites tend to rate the most stars. We did learn that our tastes for places a bit less visited and a bit less "touristy" differs from the Michelin target user but we were able to adapt and continue to get good use from the guide.
What's missing? The guide needs a decent planning map. It has many small maps that outline driving tours but are not particularly helpful in planning. The (separately available) Michelin regional driving maps are huge and at too fine a level of detail to be useful for planning (though they are quite useful once on the ground in the region). Michelin needs to strike a balance in the guide.
We have traveled a fair amount. We like the new Green Guides the best of all travel guides we have used over the years. We do hope that Michelin will continue to expand their coverage with new guides.
The book is printed on high-quality paper stock. While generally good, it does make for a somewhat heavy guide to carry around (and even more so considering we had two Green Guides with us). I do wish this were available in eBook format - it would help lighten the load while traveling.