One drive doesn't sync files the way dropbox or gdrive do and it's super annoying. Cortana is no better than Siri or Now in that it basically just sets a timer or dials a contact and everything else in my experience is chock full of irrelevant links and spamming listings. The one thing I actually appreciate with Windows 10 in particular is that the Weather Live tile is good and doesn't have Accuweather or the Weather Channel banner ads in it. I am glad they went with just giving you with weather. My LG tablet's weather app is a banner ad crapfest and my iPhone's weather app is pretty much useless by comparison. Why can't everyone just show me whether it's going to rain in the next 15 minutes without subjecting me to ludicrous ads. Seriously. Thank you Windows for that at least.