I found "Living and Working in Switzerland" to be excellent and really helpful during our move. We too have a Lonely Planet and a Let's Go travel guide, but we don't use them too often, I'm pretty familiar with the country as it is and we got them as gifts when we moved. Everything else I've seen is either downright stupid, or tries way too hard to be funny at the expense of actually providing any useful information.

Cheese, chocolate and banking jokes never get old, right?