Western Digital Ultrastar Data Center Vs Enterprise Capacity vs Gold

Hello. I would like to buy a new hard disc with HelioSeal technology. It should be at least 8tb.
I can not understand the differences between Data Center vs Enterprise Capacity.
My problem is, I will store music, movies, videos in it. Which hard disc I should buy? Please help thank you.

The Gold disks are aimed at consumers who need a higher quality disk. Gold disks are also helium based which is common with high capacity disks.