Steyn and Philander are the top two bowlers in the world at the moment according to the ICC rankings, while Morkel has also earned a place in the top 10 at number nine.

Donald was one of the most feared fast bowlers of the modern era and took 330 wickets in 72 tests after South Africa returned to the international cricket fold in the early 1990s.

Despite featuring in some imposing bowling attacks himself, Donald did not hesitate when asked whether the current unit was better.

"I would have to say that, yes," Donald, who is in Australia as bowling coach for the Proteas, said.

"I'm not just saying that, because I was part of an attack with Shaun Pollock and myself and a few others, and I say that humbly and respectfully, I think this is as good as it gets.

"They've been bowling together for quite some time now, which is nice, so momentum's been built over the last couple of years, consistency in selection, and it's nice to have a group of guys that know what they're about.

"But still, the produce factor is always the key, and this is as big as it comes, coming to Australia."

The South Africans will be relishing the prospect of bowling against an Australian batting line-up which has looked fragile at times in the last couple of years.

The number one ranked test team has brought just four seamers on the tour, however, with uncapped all rounder Rory Kleinveldt making up the quartet.