It should be the Lumia 820 from Nokia. It offered me a good balance of processing power and features. I am then decide to buy it here, as I called my provider the incredible price of 440 euros, where I got it here for over a hundred Euros less. (At that time was still new)
I can only say I do not regret it for a second. Windows 8 I personally feel as much user friendly than Android. The phone has great looks and fits comfortably in your hand. Compared to the 720, although it is a good deal more difficult, but it offers even more.
What was a bit annoying was the enome energy consumption. Hence only four stars. On average, the battery in less than one day was completely empty. Turns not everything unnecessary from, so you will be only partially happy with the phone. Here is MMN still need for improvement for future Smartphone generations. If you have Windows Phone but configured correctly holds the battery by even two or three days.