Have been travelling using Lonely Planet guides for 15 years and have always seen them as the best of the guide books. Sad to say that both South America on a Shoestring and Central America on a Shoestring were both equally terrible. Main points that frustrated - i) out of date reviews - places marked as good, were now not etc. Info about sites no longer accurate due to the huge time lag between the last visit when you read it, prices not in line etc, ii) the fact that everyone has one so the same average places are overcrowded and they generally overcharge iii) maps that are not accurate (e.g. roads shown over a river that did not exist, wrong placing of accommodation on maps etc), iv) lazy editing for the new addition so that sections of the text contradict the new overviews. The main use I can see for these books is the history sections and 90% of the time the maps also. Better to use other sources of info for where to stay, visit and eat (e.g. other travellers, hostel info boards, Hostelworld, Tripadvisor etc).