I'm needing to get myself an external hard drive for backing up my iMac but am not sure what to get. Most of the reviews I read for the external ones like the WD mybooks are not that great; that they are expensive, don't last very long and use annoying software to do simple tasks. So maybe I just want a big blank hard drive I can format myself and put into a dock. That way I can switch out drives easily. Finally, any recommendations for drives (and docks for that matter, though there are less to choose from)? The hd in my iMac is 1T, but I have barely used 1/10 of that! Should I go ahead and get a 2 T or stick with the 1? Are there some brands that are consistently more reliable than others? thanks for the help!