I can tell you this first of all: you can not understand how intuitive, friendly, and clean this OS is until you play with it yourself.
Now, I will tell you what I can. WP is the best OS I've ever used. I came from Android, and can tell you you that you want to avoid that mess. It's just too out of control, and the fragmentation is insane. Anyway, to understand what's so amazing about Windows Phone, you have to learn how well everything is connected. The social network integration is unmatched, and when when you get used to it, there's no going back. Here's a real world example:
My sister calls me, and tells me to go look at a comment on her last Facebook status and her last tweet. So I hit "Speaker," tap her name which will take me to her contact page, and swipe over once to "what's new."
That's all there is to it. On any other platform, you would have to hit speaker, then go to a FB app, then hit friends, find her, then look, then back out to a twitter app, and so on. And this is just one example of how the entire phone is, and not just with social networks, for example:
I want to read up on The Hunger Games, so I hit the search button, and enter my query. Not only will I get search results, but Bing will also suggest apps that can help you learn even more, as well as get showtimes, etc. You can then click and open up the app, or take you to the Marketplace to download it.
Here a song you like? Hit search, then the music icon. It will tell you what the song is, then give you the option to purchase it, right there (or download it if you have a Zune Music Pass).
This is how WP works. Features that other OSs have to download 10 apps to do, WP does out of the box, and it's all integrated. Then there's the Live Tiles, which are both beautiful and functional. I know what's going on with what I care care about within 10 seconds of unlocking my phone each morning. The Metro UI is a beautiful UI, with a no-nonsense, info up front philosophy. The virtual keyboard is incredibly accurate, which I know you'll appreciate. Oh, and listen to no one who says they're no apps here: there's over 80k, 90% of the big ones are here, and we have the fastest growing Marketplace of anyone.
I've played with a Lumia, and I can tell you that that polycarbonate body is so sophisticated feeling, not to mention incredibly durable. The screen is amazing, with ClearBlack technology. The Carl Zeiss lens camera is very good. I would highly recommend it.
Hope this helps!
Sent from my Samsung Focus S using Board Express.