Thx Onesome for your valuable info. I also read economic books with a lot of graphs.
Currently I have both a 7 inch Galaxy Tab and a 6 inch Hanlin V3 reader. This screen size is not big enough. And navigating the Hanlin is a painful thing. I need very fast navigation across pages... This is one area where the M92 rocks (with the pen and navi bar). I am really happy that you shared your experiences with the Galaxy Tab 10.1 because this device also attractive. I was not sure, whether the amoled screen is comfortable to read 300+ pages. So I also tend to order the M92 instead.