I highly recommend Famba Afrika!
After my previous arrangements fell through at the last minute, Famba Afrika was able to provide me with a new transfer in less than one hour. They saved my trip. I had a very enjoyable drive from Harare to Masvingo, to visit the Great Zimbabwe Monuments. My driver, Chemwa, was very knowledgeable and we had a pleasant conversation for the journey there and back.
If I am ever back in Zimbabwe I will certainly use Famba Afrika, and I recommend that you do the same!