Somehow I never beleived in simulators being real.
They aren't -- not from an e-book developers point of view. The "Kindle for PC" for example doesn't work much at all like a real hardware Kindle. And even the "Kindle Emulator" called the "Kindle Previewer" doesn't do a good job at emulating a hardware device. To do that they would need to write an actual emulator: a virtual CPU that would run the actual code of a Kindle hardware device on a PC, say. But clearly what they have done so far is not an emulator. So, to see what customers are really going to experience one has to get the hardware. Conversely, ADE is much more representative of the Sony Devices -- because the Sony Devices *are* running a mobile version of ADE. But the Sonys vs. Desktop ADE have different available font sets and font restrictions.