The reviews for all externals are not great. For now, for today, externals are fine copies but not backup. To achieve backup we need no less than 3 copies and one copy off location.
Many have forgotten this and why this is so. At least the internet has articles on this.
Given that external drives are not backup and are not that reliable we have to move forward to secure what we can't lose. I suggest you put what you can't lose on DVD and then look to those USB drives for the next copy of the rest.
I want to back up my laptop and I don't know which external hard drive to buy. Costco has a WD Passport SE on sale but reviews are not good. Can anyone tell me which reasonably priced one would be best? Thank you.