Some time ago all Seagate drives came with a 5 year warranty - five years! I do not know if that is still true. Why not send them an email and ask for warranty information?
By the way, for what it's worth I have also heard at least one complaint about a Seagate drive.
That price on Amazon - the first one - is very good. The Passport drive is designed for portability, which I don't believe you need. And given also the extra £££, the first would be a better choice.
p.s. I have not been able to get advice on repairing the plastic around the edge - the question you asked in a previous post.