This is my second Lumia what to buy this year. Several months ago, I've already bought a Lumia 830, which I am fully satisfied. I switched from Android. At first I got some apps missing and had to get used to the new operating system. Meanwhile, I would not exchange it for an Android. But the constant updates of any apps in Android nervous. Both Lumias run very smoothly and are the functions ago my opinion equivalent to Android and IOS. Compared to the 830, you have a few drawbacks bez when 640. the camera and the design / material from the housing make. Who does not attach so much importance to these two points, the 100 Euro fee 830 can save. I can highly recommend both. After some time you will love them. Limitation I have to say that I use none of them for games and may therefore not express any opinion on this point. Price performance is always top in comparison to other devices on offer.