Hello Aleksandar,
Welcome to the best forum.
Only hunted DG once so far (buffalo shown in my avatar here).
It was on a South Africa private concession (I think it's called "Maruli" or something like that) of about 100,000 acres, open to The Kruger Park/not fenced between the two, only common boundary was The Olifants River.
Lion tracks indicated we were not the only hunters watching the buffaloes there.
I even saw a skittish lioness just as she darted into the thorns.
We also had to be careful of elephant as they seemed to appear out of nowhere now and then.
According to the land owner, so few permits are available for that place, the buffaloes are not especially shy but, instead are cheeky toward people, probably regarding us the same as they do lion.
When we were crouching behind some bushes, watching some bulls bump heads, a cow busted us and so a half dozen bulls began to "one-up" each other, moving closer and closer to us in relays, obviously trying to push us off.
As per the PH's whispered description, I marked my bull.
Smooth and swift the PH set up my sticks and quietly said "take him".
I shot him in the throat / brisket juncture with my .450 No2 NE / 480 gr soft and seemingly knocked him off his hooves (recovered bullet is shown in photos under my screen name).
Mortally wounded he nonetheless got back up and ran with the herd (perhaps 150 buffaloes), now thundering off toward The River and The Park.
So, I gave him my other barrel with 480 gr solid and he again went down hard but was all in this time.
We also encountered many other species such as waterbok, impala, warthog and others in plentiful numbers, always fun to see while otherwise looking for a buffalo spoor.
Likewise, more than once I have seen leopard in broad daylight while hunting PG on other lands within Limpopo District of South Africa (borders Zimbabwe and Mozambique both).
So, I presume leopard hunting there would be tip top (provided you hire the right Outfitter / Safari Company / PH, etc.
My point ?
Hunting DG is where you find it, and probably not especially country specific, except maybe hippo on land.
Lake Kariba (Zimbabwe) seems to have more opportunity for hippo on land than many places but, on the other hand, all you need is one opportunity.
South Africa may not have the "status appeal" of places like Uganda, Zambia, Tanzania, Cameroon or Mozambique but, where I hunted this buffalo, in spite of perhaps well-to-do opinions to the contrary, there was every indication that I was hunting buffalo in "Wild Africa", at least as far as my dumbass could tell.
Just make sure (as others here have already said) that you thoroughly research "who, why, what, where and when" prior to plopping down your deposit on a DG hunt, or any hunting / fishing adventure for that matter.
One thing I personally cannot abide is "hunting" on a tiny farm for pen-raised animals that are pre-measured and other such nonsense.
I do not mind fenced property at all, but for me it must be quite large and containing only animals that have been born there in the bush, nurtured only by their natural mothers and not come trotting toward the bakkie, obviously expecting to be hand fed - no thanks.
Stay On That Front Sight,
Velo Dog.