99 Problems and my harddrive is one

I have an aging PC and it needs replaced but I want to keep kicking it a bit longer till I can better see what Windows 8 sus's out to be. I've been regularly backing up info to a WD Passport 1.5 TB hard drive (external) but the problem is that it's a pain to do and takes all flipping day to update. What I'm looking for is just a great, portable (preferrable large storage size) external harddrive that will just plug in and let me drag and drop stuff I would like to save. Something that isn't as pretty as the WD and uses less resources. Everything that I have seen in Best Buy seems to have some interface or other junk on top. What would be my best option?