I have their not-eReader (a tablet sized e-ink display) and it's really nice. I usually have it connected as secondary monitor to my laptop and placed in a small arm/stand next to it. Often, I read docs like man pages or API docs on it while coding. This generally works really well with the included HDMI+USB cable. Sometimes I also read news websites on it and use it as an eReader for "regular" books. It has a sort of custom Android on it and one can install quite a few apps on it as well (e.g. to watch YouTube---yes, not perfect, but surprisingly well). The refresh rate is indeed really nice.