the best windows phone necessarily ....

Necessarily the best .... there are not a lot of high-end Windows phone.
On the plus side: the very bright and large enough screen, the very fluid windows phone interface, finishes aluminum all around the phone, quick and detailed camera in the choice of options.
Negative points: background battery seen eye. Too small battery for a full HD screen so bright. Lack of applications on windows phone. Perhaps also the weight of the phone. Me that's fine, really it seems to have a solid object in his hands.
I recommend this phone to those who adhere to windows phone but do not want to skip the photo quality and the speed of the machine (large processor and 2 gigs of ram). For geek windows phone;)