If you really want oryx, Namibia is the place (also in SA.) I've never seen one in (more lush, less wide-open) Zim, as they don't occur naturally and are primarily desert dwellers. You can see most of the dangerous 7 in Namib plus cheetahs, but you'll likely hit some parks or the Caprivi for that (photo safari separate from hunting area unless it has particularly good water features and food). If you wish to be in a wild place, seeing elephant, hippo, buffalo near camp (and lions once you have something in the skinning area, hearing leopards at night) while hunting PG, S. or SE Zim is the place to go. If you can give up the oryx, several areas have lion, buffalo, leopard where you can hunt PG (kudu, eland, waterbuck, bushbuck, some blue wildebeest), Zim is the place to go (also several parks and conservancies in SE Zim where you can see all sorts of game!) Namib (and SA) additionally have springbok in the same areas as the oryx (the oryx are everywhere in "mainland" Namib-it's their national animal! My son participated in several oryx cull/meat hunts in the past. They're as prevalent as whitetail deer are here, but you'll not see 'em in most of the well-watered caprivi (which is loaded with DG/crocs/hippo, b. zebra-, lechwe-you'll even see DG across the Chobe river from the caprivi, in Botswana, and if you take the vic falls tour you drive through several national parks with all sorts of DG/PG along the way.) 'Saw giraffe in all 3 countries on past PG hunting trips (and took a nice old bull in Zim). 'Wanted an oryx on my first trip to Africa long ago, so my PH picked me up in SA, we hunted the limpopo region for 'em (also got lucky on a nice nyala) and then drove over the border to "wilder" Zim for the balance of the hunt (spiral horn slam, impala, warthog, wildebeest) and saw plenty of DG from camp and while hunting along the Limpopo and Save Rivers (as well as others draining into them-Bubi, Mkwasine, etc.) Good luck & have fun!