Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great software!

Diskeeper performs as promised though it is not consolidating the directories (at least visually). I have not had any problems with speed during the "Set It And Forget It" as long as the priority is set to low or lowest. I have not had any problems with inconsistent disk messages either. That might be due to physical problems with the disk. Windows does not deal with hardware problems real well sometimes.As for the "built-in" defragmenter, it is a scaled back version of Diskeeper. Diskeeper was developed by a guy that worked on the original development of NTFS for Windows. Speedisk is an O.K. product but I'd use Diskeeper anyday.