in our store we are offering both devices.
I just can tell you the statistics - although PB912 is much cheaper than M92 currently we are selling just 1 pc PB912 to 100 pcs. M92.
PB912 is a very good (looking) device, but using outdated screens (in many documents it is just too pale and contrast can not be adjusted like in M92's pearl screen) and quite inconvenient PDF Reading software (panning with stylus or joystick seem to be impossible and it lacks on good multi column reading mode, which is very important for reading of magazins) it can not really compete with M92.
Last edited by Booxtor; 11-06-2012 at 05:02 PM.