The Dirty Harry Collection, Best Of?

Clint Eastwood made five Dirty Harry movies (Dirty Harry/Magnum Force/The Enforcer/Sudden Impact/The Dead Pool) from '71 to '88. Which one do you all think is his best in the series?

I am planning to watch all five movies this weekend, so my vote won't be in till Sunday :D

Dirty Harry (1971): Directed by Don Siegel
A San Francisco cop with little regard for rules tries to track down a serial killer who snipes at random victims.
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Magnum Force (1973): Director: Ted Post
Dirty Harry is on the trail of vigilante cops who are going beyond the law to kill the city's undesirables.
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The Enforcer (1976): Director: James Fargo
Dirty Harry teamed with a rookie female partner that he's not too excited to be working with.
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Sudden Impact (1983): Director: Clint Eastwood
A rape victim is exacting revenge on her agressors in a small town outside San Francisco.
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The Dead Pool (1988): Director: Buddy Van Horn
Dirty Harry Callahan must stop a sick secret contest to murder local celebrities, which includes himself as a target.
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After glancing over five movies over the weekend, tend to agree with Pat.P who voted. The Dead Pool had a good story line along with Magnum Force, but Dirty Harry is much “livelier”. Most probably due to director Don Siegel :)