Yes, manufacturer gives the best number, but I think someone in netronix once measured only the display itself, obtained the 8000 number, and every producer using any similar device just copy that number. I haven't seen any other number.
When I measured count page (search for my old thread), i got about 4500 page turns (without the consumption of the processor in sleeping mode). Of course with black flash, without this feature the screen is not good for long reading.
Anyway, most of the time i am recharging every two weeks, reading at least 2 hours a day, possibly more. Comparing to any lcd device, i am quite happy
