Either will work just fine. Don‘t know what kind of safari or environment you’ll be in — a Buffalo hunt in the Luangwa is quite different from an Eastern Cape Plainsgame Hunt. Also, if it is your first safari there is a lot of new things to grab your interest - people, landscapes, Boabab trees, birds, and other critters beyond those you’ll be hunting. A good binocular will certainly enhance enjoyment. Bring a good camera too.
A few factors to consider:
- how much time will you be hunting from the truck vs on foot?
- Africa can be extremely dusty depending on area hunted
- are you hunting with rifle, bow or a combination?
- will you be the only person using the binoculars?
- your PH will be the primary judge of trophy quality
Also, although they make fine products and I own several - no PH will think less of anyone showing up with a Zeiss, Leica, Meopta, etc. There are many fine choices to bring on safari.