Been a big fan of JK Defrag for a long time and it just got better with this new version.
I particularly like the recommendation to do a "slow optimization" once a month and a "fast update" daily.
One word of warning: I did download the MyDefrag GUI Wrapper for the new version (not the same GUI by Emiel Wieldraaijer as I used for JK defrag)and ASquared flagged it as carrying Trojan Downloader.Win32.Banload!IK.
Knowing ASquared's propensity for throwing up false positives that is probably what it is but I removed the GUI again just in case.
Hopefully the Emiel Wieldraaijer GUI will be updated soon for use with the new version.
Until then you just need to run it off the scripts provided.