I really love my N9.

My opinion is that the UI of N9 is the best, the design is great. Shame that Nokia did not believe in this great phone.

Just one thing : the lack of applications on the store. But for me, I have most of what I need. The only application that I really miss is "deezer". So some times I use Galaxy Nexus just for that app. Galaxy nexus is a good phone but the truth is that I am now very frustrated by other UI: N9 UI is so natural ! For example I often find myself tapping the galaxy nexus to wake it up, or sweep the screen to switch to another application.

Since I reinstall my N9, the battery life is really improved : more than 48h normal use (calls, sms, internet 3G and wifi).