I have used IntelliJ and Eclipse before. Android Studio is the best IDE for Android Development so far. Things i liked on Android Studio which other IDEs lack of are it uses Gradle as build tool, it has very rich keyboard and code shortcuts, it has build in image asset creator, it has build in tools for monitoring Memory, GPU, CPU and Network usage.
Gradle build tool makes development easier because there is no need to download and copy .jar library files into your project. , one line code is enough to add library into your project. Build in image asset creator has ability to create images with related DP values. It can create launcher icons, action bar icons, notification icons and tab icons. Code shortcuts can be categorized under these titles: code completion, auto import, code clean and postfix completion. For example, code shortcut like "Ctrl+Alt+T" opens dialog which offers code surrounding like if/else, try/catch, for, switch ... clauses. Android Studio also offers you to create getter/setter and default constructor for classes. Auto import is easy shortcut, when developer writes unknown class name, it automatically imports that class into your file. Code clean shortcut organizes code with related Tab space, braces etc... Postfix completion is used for rapid development, it does complete your code after you write initial few letters.
In addition to all of these, there are plugins on Android Studio which makes Android development faster. There is new Android Studio 2.0 version which will change Android development radically. On preview version of new IDE, there is live code preview, fast project build feature, new additions to Data Binding and new fast emulator.
Android Studio uses Gradle build tool which is great for development. But Gradle makes building the project much longer than before. On project which has about 70k java code, build time for project is about 1 minute 50 seconds. The other thing is it still uses default emulator as like other IDEs. Default emulator is very slow which can not be used for big projects.
Android Studio IDE is stable for developing small or big projects. You can use it either for personal or team projects. Also check shortcuts before starting to use IDE which will make development life easier. If your company is not ready to switch to Android Studio now, consider Android Studio 2.0 version in the future which will be much faster and easier for application development.
I am using Android Studio for Android application development. It is great IDE for building application as a team using VCS like git. Benefits are fast application development, easy to use external libraries and plugins and build in tools to analyze Network, CPU, GPU and Memory usage.