Sam and Ernest (driver) has been excellent! Professional, experienced, curious, well informed, and funny.
We left from Iringa and took Lake manyara np, Ngorongoro and Empakaai craters, and Serengeti np. Samson is a very good guide, well prepared about animals and Tanzania environment. Also Ernest has been an excellent mate during the trip.
If I will arrange another trip I will do it definitely with them again!