I agree with a lot of this thread, everyone has got the points somewhere or other - under 3-an-over is the rate any decent bowler should be aiming for in FC-cricket of any kind; economy in FC-games comes second to wicket-taking and even if you go for 4.5-an-over it's not of massive importance if you take 6 for 90 from 20.
Mushtaq Ahmed in 2003 should have been a little disappointed to be as expensive as he was, but not too disappointed because he took 100 wickets. For me, though, Mushtaq is a much, much better bowler when he's being economical than when he's going for a few. For most bowlers that's the case, but for Mushie it's especially so IMO.
Regarding Ntini, however, I think many English people who don't watch enough World cricket will have got the wrong impression. Ntini is not a wayward bowler who will always take wickets - he's in fact the exact opposite. Ntini for the last 2 or 3 years has been one of the most accurate bowlers going around, and he just had a bad tour of England - NatWest and Npower Test Series', even if he got 10 wickets at "England-batsman-hook-a-holic" Lord's. In Pakistan he was back to his normal self.
Some people have tried to use Craig's words "acceptible economy-rate" as him meaning bowlers going at over 3-an-over can't be that good. I really struggle to believe that people can be this desperate to discredit a name.