The Data book itself has the minimum information at the least weight and cost. But it does the job. The printed version that I used a few years ago was only available for South Bounders, so page one forward was Maine so as a North Bounder I started on the last page and worked backward. It was a slight pain in the neck. The AWOL guide is the most popular among hikers. It gained it’s following because it offered innovations like a profile map and a more personal style of writing with down to earth advice from a hiker point of view. The guy who invented was one of us, who did it all on his own with no backing. He gained a loyal backing by publishing his Trail Journal in a book, AWOL on the Appalachian Trail. I used it every year for about 4 years based on it’s merit. One of the things I liked about it was it had an edge to it. It appealed to my personal “hiker trash”, outlaw, stealth camper, attitude and was in direct conflict with the conventional strait laced “Cider House Rules” dictated by the Trail Clubs sponsored “Thru Hikers Companion” who attempts to lay down the law on each and every page of the book. It is a book put together each year for ther ATC by a front organization also a non profit called the ALDHA. They produced a guide updated each year with pretty good trail information but usually had blaring errors and no maps. I chided it on social media for getting it’s butt kicked by a small time operator like AWOL who must make a profit. In the past 3 years things have changed. The Companion has improved it’s look, layout and maps, it still lays down to law too much(you should see this years 5 page Baxter warnings). But AWOL has removed the edge now and has taken on the boy-scout pledge. So after all this I say that AWOL and the Companion are about the same and will serve you well.
Francis