WD my passport ultra gives a storage space of 931gb. It comes at a price of 4000. It is the size of a credit card and looks very attractive. It has USB 3.0 but I got transfer speed of only 30mbps which may be due to my computer hardware.
Its USB cable is very short in length. It comes with a lot of preloaded software that allow security encryption, setting data backup plans to cloud servers and diagnostic tools that scan the drive for defects, bad sectors etc. It has got a temperature sensor and also provides alert if the drive starts to malfunction. It has got 3 years warranty. Go for it.WD is the best in the market along with Seagate.