I used to love reading print editions of Lonely Planets, and still bought them until around 10 years ago. While it's nice not lug around heavy travel guides any more, I do miss the quality of the writing and the standard format (far more useful than the internet forums that disrupted them in many respects). TripAdvisor certainly has far more information than you could ever pack into an LP, but sifting out the useful info from the tripe can be annoying and time-consuming.