Sony's Windows ebook Reader
currently emulates a PRS-700, so it is a good way to check for Sony mobile ADE compatibility. The PRS-505 and 700 have an old version of ADE, but this may be upgraded soon and the PRS-300 and 600 will presumably have an up to date mobile ADE. The next version of the Sony desktop software will also be available on the Mac, and will presumably emulate a PRS-600. That will then be a good stand-in for any mobile ADE implementation (although there may still be some differences between mobile ADEs on devices from different vendors).