Since Google had changed their mind to support IntelliJ IDEA, they released lots version of Android Studio. But those of them looked like a "developer preview".
I have to say that I never use IntelliJ IDEA before. But most of my friend feel that's an awesome tool. And I believe that's true.
But, when I tried to change my android development from eclipse to Android Studio, some basic things are failed, like to create a new project. The project is created but lots warning got. It looks still work. But I didn't change any settings, just create one. That makes me uncomfortable about Android Studio.
I think it's not the fault of IntelliJ IDEA. It's the integration between them. BTW, I still feel IntelliJ IDEA is awesome.