In Win2000, Diskeeper v6.0 is very slow, so I uninstalled it the day I downloaded it. PerfectDisk is faster, but I don't agree with their privacy policies upon purchase, and I could never get a live person to talk with before the purchase, so I uninstalled that even though it still worked after the exp date. Now, on the rare occasions that I need a defrag. I boot back to Win98 😉 and run speedisk since I'm using fat32. I think Win2000 does a very good job of preventing fragmentation since I rarely drop below 95% across 58G. I'd try em both, then you'll know which runs better on your system. I had another one but I'd have to pay in euros, so ... 😉 It was pretty good too. I'll see if I can find the link for it as well.