I am using this my wd passport hdd from 2 years.
This cost me approx 5700/-.
1- Space shown in description is not available in that quantity.
2: -Data transmission rate comparison to new hdd is very low.
3: - weight is ohkk to carry.
4: -data transmission rate is decreasing day by day.
Overall if you are spending that much amount then you can go for sdd option. Which is latest in technology and compatibile to use And easy to carry it to different places.