I've been an Android developer for 3 years, I've used eclipse extensively as well as Android Studio extensively. Android Studio kicks the pants off of Eclipse. The simple truth you don't realize how painful and terrible the whole Eclipse experience is until you've switched. It solved a ton of my pain points and I would never consider going back. All of my projects have been converted to Gradle, and the savings I receive from that build system are remarkable. It has its own pain points (mostly due to being a pre-1.0 release. Builds break from update-to-update, weird issues arise trying to go from eclipse to Android Studio. Gradle doesn't fully support native. So there are definitely use cases where Eclipse is still a necessary evil. But if you can go the route of Android Studio do it, you'll thank me later.

Don't cheer, just take out your checkbook. They like the sound of money much more than cheering.