I also have a collection of hard disk that is Seagate, WD, toshiba.Which one is best the direct answer to this is seagate.Firstly its 3.0 connectivity its cable is rare to find. Because of which transfer is quick.Secondly comes with seagate cloud storage. Additional storage option you just have to register to use cloud storage.Third 2 years warranty. And fourth Seagate is a brand which justifies its name.Seagate get installed automatically and very quickly in your PC AND LAPTOP. Seagate is name you can trust.Benefits of Seagate hardisk is that it doesnt loose connectivity easily where as the other does.So I would recommend prices are almost the same but if u r investing 7999 go for the best and dnt trust just use it bcz I am confident enough for SEAGATE that it will impress you automatically with its built, Speed and connectivity.Hope my review was helpful.