I haven't seen a lot of South African cricket this year. But I will say that for some inexplicable reason, I find Pollock to be South Africa's most important cricketer and therefore all-rounder. Maybe not so much in tests, but definitely in ODI's. But while Pollock's stats don't reveal much about greatness, he really is an important player. He's almost like Kumble in that he may not always be the best player, but perhaps the most important.
In contrast to this is Jaques Kallis, who's an enigma to me. Kallis' stats look great, not so much in ODI's, but in tests definitely. But while I haven't seen South Africa much recently, in the past few years when I've seen Kallis, he's rarely showed to me he's as good as his stats indicate. Although I will say his batting in the 2004/05 series against England gave me as much joy as I can experience watching batting.
But yeah, I have no exact rankings. At the start of the year it would be Flintoff by a mile, but he seems to have dropped off a little. The love for Afridi confuses me. Sure he's great when he gets going, but more often than not he'll sky a bouncer in the air to be caught. Probably the most loved cricketer with an average in the 20s.