We opted for the two day tour, stopping off for an overnight stop at Purmamarca. Our tour guide Juan and the driver his brother amazing. Very knowledgeable and extremely helpful. I can give 2 examples: on our visit to the archaeological ruins in Tastil I had a problem going up to the ruins and had to sit down and not go further. Juan ran down to find out what was wrong and when he was reassured that I was not ill but just had problems walking up, he asked for my camera and took some videos to make sure that I saw what everyone else was seeing! When my friends's phone ran out of charge, he found a charger and they charged it up for her! The first day of the tour was just one fantastic view after another. As other reviewers have mentioned the second day was not in a Movitrack bus and the driver/guide was not as good as Juan! Juan answered all questions and gave really detailed descriptions in both English and Spanish. Juan happily took photos of the tour members and the bus stopped every time there was something interesting so see by the roadside - e.g. animals, a view that someone commented on etc. Nothing was too much trouble.The first day was fabulous!!