All of South Africa's connectivity providers have an uncapped ADSL package available but what are you really getting and what speed is it giving you? Uncapped means you can download as much as you want which is all senseless if your speed is too slow. MWEB, Afrihost, @Lantic uncapped ADSL pricing.
Most uncapped ADSL advertised are shaped, meaning priority is given to certain protocols.
Email, FTP, conventional downloads like documents are not affected by shaped ADSL.
Online gaming, video downloads, Skype and trading platforms will be slower in a shaped ADSL.
Expensive, unshaped ADSL is still very expensive. Don't confuse uncapped with unshaped.