buy it. Just be extremely, overly, trmendously (add more adjectives here) careful if you are planning to buy a used one. I have a new and a old one here and the new is massively faster, maybe it's because it doesn't have so many apps but I think it also has to do with hardware age. Also the usb port is fragile and you don't want it to fall out now that nokia doesn't fix them anymore (they do honour the warranty but some folks here ended up with N8's and E7's).

So if you can get your hands on a new one get a new one.