Bigger isn’t always better. You don’t want to opt for the biggest magnification for a couple of reasons.
First, magnifications of 12 or higher have hand shake when you’re trying to focus.
High magnification also means narrowing the field of view.
We often used our binoculars to scan the bush in search of lions and needed a slightly wider angle for that.
I recommend choosing magnification of 8x or 10x.