We booked our 2D/1N Inka trail with Pachamama based on the reviews here and had no complaints. We originally wanted to be in a small group but there were no others on our chosen day and actually thought this was better as we did not need to worry about holding people up. We met our guide Wilian Elvis the day before and he gave us our tickets and explained everything for us. So, we had taxi pick up early to go to Ollyantambo where we caught the train to 104km where Willian met us. We were blessed with good weather our whole trip and this made the trek much more enjoyable. Wilian gave us so much interesting information that we probably couldn't have got elsewhere. He was conscious of when we needed rest breaks and always offered to be cameraman. We had evening dinner with Willian to discuss the next day, the start time being entirely up to us. We were found a place in the bus queue next day and given an excellent over two hour tour of Machu Picchu which really brought the site to life.
I would recommend that everyone visits Machu Picchu this way as it was the highlight of my holiday.