I had chosen to contact Say Hueque to arrange a 2-day trip to Iguazu Falls based on the very strong reviews that I had read, and my wife and I were not disappointed. First, the planning of the trip, months in advance, was excellent, with very responsive staff answering my many questions and making the arrangements (including the excellent Loi Suites hotel) efficiently. And all of this was executed as well as is possible - from meeting us on our flight from Buenos Aires, to efficient transport and timing of our local guide and driver (which involved going over to Brazil on our arrival to see the Brazilian side, leading to passing through 4 border controls (those do take time, but our guide was very helpful in facilitating these)). The flights arranged by Say Hueque were exactly what we needed for our schedule, the hotel was wonderful, and, of course, the Falls are amazing. On our return flight to Buenos Aires to the domestic airport, Say Hueque arranged for a driver to take us to the international airport, and that went off perfectly. And Sergio at Say Hueque contacted us while we were traveling and followed us every step of the way making sure that all went well. I would definitely recommend Say Hueque to anyone planning a trip to Iguazu, and I would certainly look to them first for other trips.