Shoaib - better than anyone on either side at his best, but still not consistent.
Pollock - deadly on a seaming wicket almost without fail; won't often give much away on any pitch.
Ntini - somewhat overrated in the Test game. Capable of bowling very tightly but very inconsistent with his accuracy. One innings can be right on the button, next can be all over the place.
Sami - terrible Test bowler.
Shabbir Ahmed - excellent bowler for the most part of his career, except in his most recent series. And you're no better than your last series, so he needs to come back before we can talk about his ability in such high terms again. He's not been brilliant this county season, either - and still bowls far too many no-balls for a bowler of his accuracy.
Nel - still not consistent with his accuracy, either, but very very potent when he is.
Kaneria - much as he always seems to promise, but for that series against the opposition his only good Test performances would be against Bangladesh.
Saqlain - very dangerous on a turner, totally innocuous on a non-turner.
Boje - not quite as dangerous as Saqlain on a turner, but equally innocuous on a non-turner.
Hayward - never been convinced of his ability, never been quite accurate enough for mine. If he were he could be quite some bowler, but sadly he's been playing for a long while now and he's never looked like becoming much more accurate.
Kallis - good on a seamer or when it's swinging, not as good on non-seamers and when it's not swinging. Nowhere near as accurate recently as he had been in the past, either.
Klusener - read Kallis.
Of course there are others on both sides - South Africa have a veritable mine of seamers with Terbrugge, Ngam, Willoughby, Langeveldt, Zondeki and some others all promising but still yet to either deliver, stay fit or hold down favour with the selectors. Pakistan always have someone or other who's supposed to be the next great thing (Mohammad Irshad was the latest I heard), and most fizzle-out but the odd one makes it. Certainly their attack is nowhere near as good as it was 4 years ago when Wasim and Waqar were still playing and performing.
I'd much prefer have South Africa's on a green seamer if I had to make a straight choice, but if I could be guranteed Pakistan's would bowl as they can I'd have them on any pitch, green seamer or dustbowl.