Simple. Uses: School work - Parallels (Windows 8 for booting) and Microsoft office, but may start using pages. YouTube. General browsing. Computer: Baseline 13'' Retina MBP (i5, 4gb, 128gb ssd). Or a baseline 21.5 iMac (i5, 8gb, 500gb HDD). I currently have a MBP 13'', that i recently sold and found with parallels and say a youtube video playing at the same time, when booting parallels it would freeze up and take a while to load, so more ram would be good. But the ssd and retina screen is so tempting. What do you guys think is a better option?