Forensic Tool Comparison - The National Institute of Justice has done evaluations on a number of digital forensic tools:

Partial Results from Prototype Testing Efforts for Disk Imaging Tools: SafeBack 2.0

Test Results for Disk Imaging Tools: dd GNU fileutils 4.0.36, Provided withCRed Hat Linux 7.1

Test Results for Disk Imaging Tools: dd Provided with FreeBSD 4.4

Test Results for Disk Imaging Tools: EnCase 3.20

Test Results for Disk Imaging Tools: safeBack 2.18

From Tim