Hi All, I have a June 2010 17" 2.66 i7 UMBP. I need to buy an external HD ASAP (1TB) by GMT lunch time today. I have no idea generally on HD's & get confused what to get as the choices are so many. I would like to eventually replace the existing internal HD (500GB) with a 1TB one & would like to use the one I will buy today which I will have to use as an external one for backing up for the time being. I know some Western Digital Passport drives use to fit in the non Unibody ones but am not sure if they will fit in the 17" UMBP's. There are so many WD drives (& other makes) so I do not want to make a costly mistake. Can some please very kindly let me know of a decent external HD that will later fit in my notebook & at a good price? I am really pushed for time & quite flustered so please help if you can!! Bazzy!