What's the difference in content and focus between "Wallpaper*" guidebooks and others?

Different guidebook brands tend to be suited for different types of travelling and specialised in different ways. For example, I find Bradt guides to be great for off-the-beaten-track travel, Lonely Planet seem to have cornered the market in "classic" backpacking round hostels, Trailblazer seem to specialise in outdoorsy challenges like trekking, etc etc, then there's a whole host of glossy books high on photos and low on practical detail that are more like coffee-table books for people on organised tours.I'm trying to find city guides that are...Read more