April 13th, 2011 
IT360 
Pros: The comprehensive set of features and excellent defragmentation engine make Fix-it Disk Optimizer a highly recommended product.
Cons: Users cannot experience the optimization effects using the trial version with limited functionality.
Popularity: 1%
April 13th, 2011 IT360 
Pros: PerfectDisk 11 Professional offers powerful hard disk analysis and defragmentation.
Cons: PerfectDisk 11 Professional takes up much system resources and works slow when defragmenting hard disks.
Popularity: 1%
April 13th, 2011 IT360 
Pros: A feature rich application, Diskeeper 2011 Professional has a good defragmentation tool.
Cons: Novice users may find Diskeeper 2011 Professional a bit too complex to use.
Popularity: 1%
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