We recently completed a 5 day safari with Open Africa, and it was a truly memorable experience. As other reviewers have mentioned, Anton is a great guide who has a deep knowledge of the land and wildlife, and worked tirelessly to ensure we saw everything we wanted to see (big 5 checked off!). He is experienced, friendly, and just the person you want to lead you on safari. A gorgeous sunrise with giraffes in the foreground, having breakfast amidst the incredible migrating wildebeest herd, and watching lion cubs playing in the sun were just some of the highlights of our trip. We also had guide-in-training Sam along with us, and getting to know the 2 guides and hearing their stories were highlights in themselves. Above all of that, John is extremely responsive to emails and communicated closely with us from the moment we inquired about the safari, all the way to after the trip. While we experienced one or two logistics issues while on the trip, John was quick to help resolve them afterwards in a professional manner. (Make sure to double-confirm the flights and itinerary before hand!) I would recommend Open Africa to anyone who wishes to visit Tanzania for a magical experience.