We were lucky to pick Dionel Baco to spend 6 days guiding us in the Sacred Valley and Cusco areas.  We visited all the popular spots such as Moray, Ollantaytambo and Saqsayhuaman, but Dionel managed to get us there before or after the tour buses so it was not crowded.  He also knows spots such as Pumarcha, that are seldomly visited.  It was wonderful being the only people at at an ancient site.  Dionel's English is excellent as is his knowledge of Peru.  His car was good and very clean.  He was able to change plans on the fly, depending on our desires.  We recommend him for your trip to Peru.