I have had my fair share of Android and iOS devices in the past. But I can honestly say without reservation that the lumia 920 is the best device I have ever owned. Just a gorgeous device to hold.
After lengthy consideration I was willing to embrace the dark side (AT&T) for the privilege of owning the Nokia.
After using the metro UI for the past few weeks the Android interface feels antiquated to me. I am running CM10 (Jelly Bean) on the kindle fire and the Galaxy Tab and even JB doesnt feel as fluid as the metro UI. Although, I must admit that the Kindle/Galaxy Tab hardware is quite a bit slower compared to the Lumia 920 and JB may be much smoother on Nexus 4 etc.
Things that are irritations (minor) to me on the Lumia compared to latest Android devices
1.) A unified notification system. I really like the notification center from Jelly Bean. I can live with the live tile notifications and hope the Microsoft step up in the next few months.
2.) Google Maps and Navigation is much better in terms of interface and integration compared to Nokia Maps/Drive. Need Nokia Drive to at least provide an alternate route option and one integrated app.
3.) Lack of support for some core Google services such as Maps and Google voice. I cant even launch the mobile version of Google maps from IE.
I use Metrotalk but it doesnt have the same usability as Google Voice.
4.)I would really like better integration with Windows 8. I record tv show using Media Center but dont understand why I have to convert them to play them on my WP8 device. With my Android devices, I could actually mount my Windows drive using cifs and stream the tv shows directly to my phone/tab and play .wtv file with MX player. This is more of a MS issue and hope they provide better integration.
5.) Daytime pics are soft (as everyone has noticed) but the low light pics are fantastic and I can live with this tradeoff for now knowing that a software update will fix this.
6.) IE on the lumia feels incredibly quick to render pages but the interface is very minimal and could use an update. I like dolphin on Android and wish IE was updated or MS allowed 3rd party browsers. Left Swipe from main screen to access favorites and right swipe for setting and a tabbed browser option (similar to dolphin) would be great.
7.) The app store is growing and I dont mind the lack of apps that much but my wife uses a bunch of apps like Path, Okta and cannot migrate to a Lumia 920 despite the fact that she really likes the device.
I havent had any issues with my battery life since I uninstalled Skype and get a least a day and half with my normal usage patterns. Overall, I am quite happy with the Lumia 920 and hope that most of the small issues are fixed in the first quarter of 2013.
In some ways some of these issues may be deal breakers for others but I have a soft corner for Nokia as my first mobile device was a Nokia 5190 (which I recently threw away and was still working) and I worked at Nokia Research for 6+ months.
Just to give a sense of where I am coming from