Hi tdullmaier! Welcome to the forums!
A good pair of binoculars is a must
It does not have to be "with image stabiliser", unless you really have trouble keeping them still, or if it has a very high magnification (e.g. 16x or 20x magnification).
For these binoculars as well as spotting scopes you really need a tripod of some kind to keep it still while you're viewing game / birds etc. - not ideal while on a "bush walk".
Do you have a basic pair of binoculars?
E.g. 8x40 / 10x50 porroprism binoculars or 8x42 / 10 x 52 roof prism binoculars?
These still remain the best for general game viewing as well as bird watching.
The ones with magnifications higher than this have lower image clarity etc, simply because if they were to increase the lens size to properly match the magnification the binocs would become too big, heavy and unwieldy.
If you don't have a basic pair of binoculars, these are good value-for-money options:
Nikon Action 8x40 (porro prism)- About R800 to R1000
Nikon Action 10x50 (porro prism) - About R1000 to R1200
Nikon Monarch 8x42 (roof prism) - About R3500
Nikon Monarch 10x52 (roof prism) - About R4500
or similar Pentax models for only slightly more.
The porro prism binoculars are older technology and easier to make, which is why they are cheaper.
They are also slightly heavier than roof prism binoculars, but their image clarity is as good as or arguably even better than roof prism binoculars since they have a better depth of field.
Therefore do not automatically assume that you must buy the more expensive roof prism models.
The roof prism models are more waterproof though.
A lot of people here will tell you you must go for a Leica or Swarovski.
If you have R20,000+ to blow on a pair of binoculars, go ahead.
Otherwise the options listed above good enough.
Don't go too cheap though.
I've had a cheap 10x50 Bushnell Falcon before.
Now a Nikon Action 8x40.
Even with the lower magnification, I can see much better with the Nikon than I ever could with the Bushnell simply because the lenses are so much clearer and better.
If you do have a basic pair of binoculars and are only looking for something with more magnification, I can tell you that I've tried a pair of Pentax 16x50.
The field of view is very small so it is difficult to find what you're looking for.
Secondly the focus is so extremely fine that it is almost impossible to focus on the subject you're looking at. More useful for getting extra detail on a small bird in the medium distance, than looking at larger subjects that are far away...
Thus, if choosing between a pair of binoculars with high magnification or a spotting scope, I would recommend that you go for the spotting scope.
However, for self drive as well as walking activities, binoculars are definitely better.
You can only really use a spotting scope at "getting out" places such as some bridges, hides, picnic spots and in camp.
Hope this helps