TooFly
If your aim is to get a JAA license, and then find work in Europe, then a lot of what Pugzi has said holds true.
However if you want to find work and build experience outside Europe then you will find a SA license is perfectly acceptable - it is actually of a very high standard. If you can get your SA ATPL and 1500 hours on multi-crew aircraft it will also make your conversion to JAA a lot easier.
That is what I am doing at the moment. I have just done the first 8 JAA exams and found them comparatively easy... your knowledge from SA will go a long way.
Whatever you do, flying in South(ern) Africa is a fantastic experience.
Good luck
CM