It's easy to use. It's really amazing how quickly you can setup an android simulator and start testing any code. Genymotion offers a lot of speed and stability. I'ts great that it works on Windows, Linux and Mac. Installation is super easy, however you must have Oracle's VirtualBox on your machine.

I like genymotion because it is an application excelent when I want to play my favorites games in Android from my computer directly. In genymotion is posible emulate any smarthphone and version of Android. Also it is the only one working with Linux SO.

I really love how quickly I can set up an android emulator and start testing my code. I can select from a myriad of devices to emulate, which mostly just changes a "skin" that wraps the phone and the resolution that the app(s) run in. Very quick to get started.