I need to move my parents to a Mac, and am trying to decide between the mid-level Mini (with a 256GB SSD) or mid-level 21.5" iMac (also with 256GB SSD); it's about a $600 difference. They have minimal computing needs, and either will suffice, but simplicity and fewer cables have some value in this scenario. Any thoughts on pluses-minuses of either option would be greatly appreciated. I would be tempted by a refurb iMac, but the need to get a Apple trackpad (hate the magic mouse) and an EPP discount greatly offset the savings. Many thanks.