Favourite guidebooks - Dr Holt

Question of the week: Do you have a favourite type or line of guidebooks?

"Not only do I admire the authors' skill at saying a lot with a few words, I especially like the illustrations in the Knopf Guides (I have both Florence and Venice to hand, kept long after long-ago visits for that very reason), but think they are too heavy to carry about. No, these are the books to read en route, or in the morning before setting out, or later, after you've seen to figure out what you've seen."- Dr Holt