I am usually using 750 GB of 1 TB. Normaly our data is important then the price of the d*ck. you can save your data with WD safely.
I felt this is Trustable hard dick company.After all this type of device is an electronic device. So, we can not 100% trust , it may be work properly untill 10 years or may be not work till 1 year also. I am Just sharing my experience Only/.