I use Diskeeper 2008 Pro, and it's been flawless so far. I am running the trial version of Diskeeper 2009 Pro on the second system, and it seems to be better than 2008. Merely an unscientific observation, but the defrag seems to be 'faster' now. Another nice addition is the file placement feature now in the Pro version.
Both are 32-bit XP systems BTW.
Both are 32-bit XP systems BTW.

Does the JkDefrag GUI work with the x64 JkDefrag? The JkDefrag is a bit automatic and uninterruptable for me. Would love to combine JkDefrag x64 with the GUI.

lol, crazy
Sounds like a madhouse there, and I thought that they were a pretty decent company. 