Win 8 likes:
-- fast boot up
-- Microsoft account syncs prefs with all PCs running Win 8 (customizable), including Google contacts & calendars
-- swipe, pinch and zoom screen gestures
-- File Versions backup (like MacOS Time Machine)
-- keyboard shortcuts from Win 7 still work
-- only $39 to upgrade until end of January 2013
Win 8 NOT likes:
-- cumbersome if not using touch screen computer. Especially difficult to use "Charms" bar with a mouse. I suggest replacing mouse with a trackpad if you are going to use Win 8 with a non-touch screen PC.
-- learning gestures for navigation is a mild to moderately steep learning curve.
-- Windows Explorer now has that stupid "ribbon" menu, like Office
-- Messaging links with Microsoft Messenger or Facebook chat. But not Google Talk!
NEUTRAL:
-- Live Tiles. Seems like eye candy IMHO, but maybe it will grow on me
