Perhaps it's just the way I'm reading these articles, but MyADSL does seems to be quite partial to the iburst offerings and it's not only this article but several of them.
Although Iburst has it's place, it's by no means the only 'real' alternative to ADSL, it's nowhere near as reliable or as stable and contention is an issue.
iburst is a fading technology that even they are likely to replace with something like WiMax and the other alternatives (which are faster, more widespread, albeit more expensive) include MTN, Vodacom and a myriad of other wireless provides which offer alternative broadband access.
Should iburst be considered as an alternative to ADSL, then the roaming capability should be excluded as this is not a function of ADSL, and other providers have far more coverage than iburst anyhow.
in either case, ADSL will for a very long time hold the ace up it's sleeve with regard to uplink and downlink speeds (as they are able to up bandwidth very quickly, recent 4mbps upgrade in point), ADSL offers far better latency, better throughput, is better at coping with high load on a distribution point (a single ATM line from a DSLAM can run at 134MBps, let alone fibre distribution).
Anyone that wants to argue Telkom stability, compare the operational time on your phone line to any wireless solution. My home phone line for example has been out for 4 days... over 7 years! our dedicated leased lines in our company have similar uptimes, there no comparison!
D