I used this book to help plan a trip I am about to make to Patagonia, via Buenos Aires. Footprint is normally my guidebook of choice, wherever I am going, and it rarely lets me down. The maps are usually the weakest part of the book, but the layout and quality of writing usually compensate. This book has been recently revised and so should be up to date - I will know that for sure when we get there. The section on Buenos Aires is really useful, saving me the trouble and expense of buying and carrying an extra guide.