As far as my experience goes, buy absolutely *ANYTHING* but the crap Telkom were supplying up until a couple of years ago. The Marconis were absolutely horrible, the Billions only marginally better. I hear they are (or have been) selling Netgear, well that is one hell of an improvement.
Netgear very rearely requires rebooting, most D-Links (and, for that matter, many other brands) have to be rebooted for every trivial config change you make. Can be a "little" frustrating.
Nothing wrong with the Telkom routers, they have always been rock solid. It's ok to bash Telkom but at least be objective. The Siemens, Marconi etc I have olways found to be reliable, not the most feature full but thats the way it works.