Regarding the storage space, the Motorola DROID X includes a 16GB memory card (32GB is supported), which is used for saving pictures, videos, music, etc, and there is also 8GB of internal space on the phone, though it is not user accessible, as this is where apps, settings and contacts and stored. Meanwhile, the HTC Droid Incredible comes with a smaller 2GB memory card (32GB supported), and its 8GB of internal space is set up so that 748MB is for storing apps, and the remainder 6.6GB is accessible to the user for storing whatever they want. As you can see, the Motorola DROID X can allow more apps to be stored and also includes a larger memory card than the HTC Droid Incredible.