WD15EADS-00P8B0 Really slow? Or am I just crazy?

I’m getting pretty much the same from a brand new WD20EADS, which seems to be the 2TB version.

I bought this one because I’d read so many bad reviews on the Seagate and Hitachi drives, with people having to RMA them, but it seems Western Digital are just as bad if not worse. 

I would prefer a drive to simply fail early in its life than have a uselessly slow drive with the hope there might be a firmware fix from the manufacturer.

Help !!