Being a huge Halo fan, I am seriously excited about Cortana. Is it enough to warrant buying a windows phone, Well maybe not. I like Samsung and and the Android OS so I'm not sure if I'd be up to switch to a Windows phone. But I'm shocked at how much just having Cortana makes me want a Windows phone lol
I'm not sure how anyone can actually like what Samsung has done to android. You get used to it, but its a really nasty [censored]ization of pure android. 'Use', yes, but 'like' not a chance.
iOS, well its nicer than android, but just looks and feels so dated now, even on their new i devices.
I've used them all, but have settled with WP. Its far more responsive than the others, even on the low end devices (try saying that about android with a straight face) and other than a couple of apps, its by far the best platform currently out there and not diddled with by phone makers and carriers with their dreadful UI 'improvements' and junk/crapware.
This is got me thinking what would happen if I put siri and cortana side by side