Any recommendations? 21.5 screen is fine. No games, video, etc. Prefer adding and installing 20GB external flash drive so I can remove my work in case of an emergency, fire, tornado, hurricane. Prefer no fans or noise of any kind. Use quickbooks. MS office. format many spreadsheets into schedules for workers. what software above will I need to buy for Mavericks and will work with Mavericks. coming from PC with XP. User ID.? HOw to change it. Dont like it. Just a play on words-switching.