I'm pretty sure there is a better defrag tool for Windows that the one from Microsoft. One of the things I'm looking for is the ability to deal with multiple very large (5G+) files. A client of mine does video work and fragged files can be a problem during editing and final mix. I can Google "Windows Defrag" and get lots of impressive looking sites, but what I'm looking for is people’s first hand experience with these programs. Freeware would be nice, but these people do have money to spend so if there is a commercial package I'd like to know what you have found to work best!