Re: I have a Lumia 920 (in Yelllow)
Well I also speak owning an iPhone 4, I have an iPhone 5 on order and still have my old Motorola Milestone (running Cyanogenmod 7 makes an excellent bedside alarm clock with its dock) and a Sony Ericsson Xperia Active (which I use for tracking my biking activities, its an excellent device and with Garmin Fit you can also use LiveTrack, giving realtime updates on you exercise/races).
So I'm pretty OS agnostic, I actually don't care what my phone runs, as long as it does what I want it to do, and in this case I've found that the Lumia 920 is far superior for use as my personal phone, than the Galaxy SIII it replaced....plus the colour is really cool :)
Also El Reg's Windows Phone app is way better than the rubbish they pushed out on Google Play for Android.
Some other interesting facts that may or may not interest you for the 920. Singapore has sold out of all devices, Thailand has also sold out and if you want one, you have to wait until Dec 20th at the moment. Thats in addition to reports of it selling out in various countries in Europe. So I think its fair to say that there is a lot of pent up demand for a decent WP from Nokia (the HTC WP8 devices are still easy to find) and Nokia/Microsoft WP is not dead yet......far from it.
One last thing, I actually went to buy a PureView 808, but after playing with the display one and the Lumia 920, walked out with that instead. So I never intended to even purchase a Nokia WP in the first place.
To all the naysayers, try it before critising something you have never held, even if you hate microsoft with a passion, I think you will be unable to deny that this is a good UI/mobile OS