The light I bought when I had my last ereader was a travelflex light by mighty bright. It gives good coverage, doesn't just have a small circle of light. My T2 just got here Monday, and I haven't used the light with it yet, but I'm using the cover from my old ereader so I'm sure it will be fine. I don't often need to use a light and the sony is much easier to read than my old ereader. If you are in the states, check the Meijer stores, they had some on clearance recently.
http://www.amazon.com/gp/product/193...ls_o04_s00_i00