I have a refurbished Maxtor 80GB (probably pre-Seagate) and a 120GB Maxtor [Seagate built] drive, the 80 is probably 4-5 years old while the 120 is probably 2-3. Both have been running fine since day one. I've never had a Maxtor fail, and I just got a Seagate for my laptop and it is nice. ...I also have a Maxtor 60GB that is like 8-9 years old running great in my server, and even a 2GB Maxtor from 1998 that still works in my ancient Pentium machine.
That said, I'd still get the Seagate, they have a better reputation and I just don't have any experience with them (haven't bought a hard drive in 3 years, except for the laptop HDD I just replaced with a Seagate a month ago).