We chose to have a driver and a tour guide for our 2.5 days. When setting up our trip, we told Kriss there were only 3 things we had to see, the National Museum, Angkor Wat and Angkor Thom. We left it up to Kriss to develop the rest of the tour and we were very satisfied. Both the driver and the guide were very courteous, prompt, helpful and flexible when we asked to change our itinerary on the spur of the moment. They took us to outstanding but inexpensive ethnic restaurants for our lunches. The Lexus SUV was clean and well maintained. They made sure we had plenty of water. The state certified guide, who apparently works almost exclusively with Kriss, was very knowledgeable regarding the histories of the temples as well as being able to speak about associated myths. He also spoke English well, although was a little hard to hear for one of the hearing impaired tourists. Finally, on the positive side, the 2.5 days was amazingly inexpensive. Strongly recommend a tour with 4 or fewer individuals and touring the National Museum first as it has excellent displays which allow you to understand the actual temples better when you visit them. The only negative was that the driver's English was harder to understand then was the guide.