I am about to hit the road travelling for a year and want a large capacity usb hard drive to use with my laptop. I am not worried about speed as this will mainly be used for archiving. But what I do want is portability,the thinner the drive the better. I was looking at the Seagate 5 TB Backup Plus drive, but this appears a little bulky. Are there any alternative drives that offer this capacity, but in a slimmer form factor? Ideally I don't want to spend much more than the Seagate drive. What would people suggest?