I replaced the 250G drive in my imac with a 1T (SATA) drive 2 years ago, but now the 1T drive is close to capacity. I was wondering if anyone had any internal hard drive recommendations for a 2T drive. I have been having some strange problems lately with my imac locking up with only the mouse responding that may or may not be hard drive related. I was using a Seagate drive but I would like to go with someone else. Any recommendations?