The document compares Android Studio and Eclipse IDEs for Android development. It finds that Android Studio uses the Gradle build system while Eclipse uses Ant. Android Studio offers deeper Android-specific code completion and refactoring support compared to Eclipse. It also has a redesigned user interface designer that is more customizable and responsive than Eclipse's limited XML-based tool. Android Studio organizes projects using modules with Gradle build files, while Eclipse uses workspaces that require restarting to switch. Overall, Android Studio is found to be faster, more robust and the better choice going forward for Android development.