I got flamed for even posting my opinion on that "other" tech forum, you know the big one. Anyway, I think that Diskeeper 10 really takes the cake now. They improved the interface, they added some new technology (I-FAAST, dumb name, but it's certainly sped my computer up so far using it) so it's got pretty much everything PerfectDisk does, which in my opinion, is the other really good defragger.