We decided to have a week's break in Mallorca at short notice and as I like to tour around new places and get a feel for their real nature, I wanted a guide that would help me make the best of a short stay. This one seemed to cover the area adequately and was matched with a similarly inexpensive road map, also from the AA.
The background history of the island was given in enough detail to let you understand why things were they way they were, without needing an evening's study. The various regions were clearly defined and useful "Day Tours" set out for each region. I'd never have found the wonderful Wednesday market in Sineu without it, or spectacular drives in the North-West mountain range.
If I'd been going somewhere larger/ for longer, I'd have wanted more depth and detail, but for a week in Mallorca it was pitched just right.