Thank you for the video link, desertgrandma. The light definitely seems to evenly illuminate the eReader, and looks bright enough even at its lowest power setting (one LED.)
All of the responders to this thread seem to agree that the Mighty Bright light is the one to get so unless someone comes up with one wrapped in beautifully tooled leather to match the Oberon (

), I guess this will be the one I will be buying.
Holly