I have a 2009 iMac Desktop (21.5"). It came with 4GB installed memory. The 500 GB SATA HD shows 406GB free of 499GB. I'm running El Capitan ...but I really dislike the "Photos" application. The La Cie external drive for my Time Machine backups has only 122GB of backup space remaining ...and my Canon Pixma printer/scanner just bit the dust for good. Obviously, it's time for an entirely new setup, but this Senior Citizen isn't sure where to go for the best deal/service. I reside in NJ and have easy access to the Philadelphia PA/Allentown PA/Trenton NJ area. Any help would be greatly appreciated.