I ordered this phone in June 2012 after doing a lot of survey on mid range phones, and i can happily say i wasnt disappointed.
I saw many reviews that say windows phone aren't simply because they use windows! Guys who say this do not know what they are talking about. Windows is a really decent OS and i like it better than the Android. Linux is ok for programming, but you wouldnt do that on your phone now would you. You look for usability( excellent), call quality(great) and response to input(again excellent).
Another myth is that of the app market. You would get almost every app you need, and those are just the free ones!
myth #2: Browsing speed would be slower since it only has a single core 1.4Ghz processor and 512 MB ram.-Unless you are playing Crysis(which you can even on android) this is a great config for a phone. And the IE browsing experience, will surprise you. Scrolling webpages is smooth unlike Android's chrome, i actually use the desktop version of facebook from my phone's IE and it runs it excellently.
Multitasking i felt is better than Android's, It is well managed by the Mango OS, i have never seen it hang like in Android.
Every thing from typing, to email is very usable and the only reason why i would give this phone 4/5 is because it does not provide support for VPN.So if you are at work, you cant connect it to your wifi network over VPN.
Apart from that, the creators of this phone really did an excellent job, right from the design to the look and feel of the phone.
Try out this phone at a samsung gallery and see it yourself.
Truly the best first person shooter experience. If you have a Wii then this a must buy. Go ahead and order now.
Ofcourse Flipkart delivery services are excellent.