> I've had problems > bad enough that only one of the three will even touch the drive, or > other problems where two of the utilities find something wrong but > can't fix it, while the third fixes it. I have to agree here. When you have really profound problems it is best have all of them.. But use then prudently. Also you should remember that you need several clean runs to have any confidence that you have fixed all the problems, as some problems can mask other problems. I I had to select just one utility, it would be DiskWarrior. HAVING said that, disk utilities should be purchased AFTER you have developed a practical backup strategy.. Not as a substitute. -Joel