The software used to stream the drive's contents to your mobile device is easy to use and straightforward, and generally works very well. We had zero issues streaming video to our phone even from across the room, but we weren't able to stream it from about 50 feet or so with a few walls in between us and the drive. Looking at photos on the device was somewhat irksome, as it just took way too long to display photos. We really hope WD can make some improvements on this front. We also don't think its six-hour battery is competitive with its rivals, as they both sport 10 hour batteries.
In the end, what really separates this drive from its rivals is its SD card slot, streaming capabilities, and its WD branding. Since this is WD's first swing at the wireless hard drive market we figure it will be able to significantly improve on the drive in future updates, or even new models. It's a great first effort as the drive is easy to use and affordable, though there is still room for improvement.