content: Have you upgraded to Windows 10, and if so, what do you think? I manually downloaded the upgrade this morning and installed it.  Not sure exactly how long it took as after I got the install going, I went about my business.  I'm guessing it took maybe an hour?  Anyway, so far I'm really liking it.  The only thing it did that I didn't care for was Catalyst Control Center seemed to get installed for some reason.  I don't think I had that running on Win 8.1, but I could be wrong.  Uninstalled that pronto.  The UI seems great.  If you've used any old version of Windows, you should be able to figure it out pretty easily.  I haven't tried Cortana yet, but plan to fire it up later tonight.