Seagate backup plus is an ultimate device which gives you a freedom of huge storage. I prefer to go for 1 TB seagate backup plus external hard disk. As per my experience , not only we will get a huge space but also we will get cloud storage for this brand.
And recently from last few years they have started to provide international warranty too. Its copy speed is also good but I cant say that its very fast, but really a good deal. Go for it