Kenya & Tanzania Africa Safari Review, Maasi Mara National Reservie, Serengeti, Ngorongoro Crater, Hot Air Balloon Ride

Every hotel, and tent camp was exceptional.  They were all clean, comfortable, ideally located with great staffing and good food.  The Safari drives were fun, engaging, diverse and the drivers were exceptionally knowledgeable on every aspect of the history, animals, birds, local people, everything.  They were great.
Our Hot Air Balloon ride was fantastic.  A little pricey but worth it.
The most memorable thing was the sheer number and diversity of animals and how close we were able to get to them.  The sightings of all of the Big 5 was incredible.
I see that you don't ask about the least enjoyable parts of the trip so I'll tell you.
The box lunches from the Sunbird Lodge, Mara Leisure Camp and Mt Maru Game Lodge were too much food which most of us threw away.  The later lodges allowed us to pack our own lunches which was much better and less wastefull.
I don't know if you have any influence over the tourist industry in Kenya or Tanzania but considering the millions of dollars spent by Safari tourists in those countries, they need to invest more money and effort in improving the dirt roads, especially threw the Ngorongoro Crater to the Serengeti.  That road is ridiculous, dangerous and devastating to the life of a vehicle.  They don't need to be paved, just capped with ABC road base that can be bladed regularly.  Not capped with the red dust that they are using that turns to slop with the first rain.
I would give our first driver/guide an A+ rating.  I would give our second guide/driver in Tanzania a B-.