Hi Steve,
I know the Pearston area pretty well, and have heard of them. Know a couple of other good outfits in that area, but cant tell you anything on Sun Africa. Just make sure to check with references, and I am sure you will have your answers.
If you need some more info on them, I will be more than happy to do some investigation for you on the matter.
Best Regards
Marius Goosen
KMG Hunting Safaris