If you want them for purely backup purpose, Japanese drives could be better choices. They are purely external storage devices, not trying to be close substitutes for internal hard drives, which have to handle constant data transfer. My experience shows that they are more durable. I used to use Seagate but switched to Toshiba. So far they are doing well.
I agree about Seagate. But I have never had a failure in many years using the higher-end WD drives. They are a little more expensive but well worth the outlay.