Summary: You can never have too much drive space... This drive quadrupled the storage (compared to the drive that originally was installed) on an older laptop. Slight increase in power may be required (with some effect on battery life), as many older laptops had 4200 RPM drives.
Summary: I like Western Digital and Seagate drives. They seem to be the better quality. I think the most problems any one would have is due to mass production and larger storage sizes. I think that the companies should have the old five year warranty on both OEM and retail drives.