Depends on the model number. Seagate has some great drives, WD has some great ones and so do other manufacturers. They also have some really bad models as well for example seagate had a huge firmware bug when they changed to 7200.11 that pretty much caused millions of drives to stop working. WD passport drives with the onboard usb imo are one of the worst family of drives on the market... You have to read up before you purchase a drive