I'm looking at purchasing a MCE OptiBay for my unibody Macbook Pro to add another 500GB 7200rpm alongside my nearly full 500GB 7200rpm. First of all do any photographers or videographers have a similar setup and how do you like it? I would set the drives up with one with just my Aperture libraries and the other with everything else. Where should the Aperture app go though? Would it be performance wise best on the same drive or should they be on separate drives? Does the optibay drive spin down when not in use? I realize I may take a slight hit in battery life when it is running. Finally, has anyone in Canada purchased one from some where? NCIX, Newegg and other Mac stores don't seem to carry them. Thanks.