Justin James is the Lead Architect for Conigent.
I recommend the "portable" version. You don't have to install it, it just runs in memory from a USB drive etc. Look for it on the builds page: http://www.piriform.com/defraggler/builds I use it all the time, great utility.
I have yet to see an independent study showing how 3rd party defrag software is somehow better than the built-in defrag from Windows. People can "say" anything they like about what they think or allude to but a real-world study would settle it for me personally. Otherwise, isn't all this just a waste of time?