What an education! I, too, expected things would "just work." Silly me. I have also watched EN progress on my iPad, and have noticed that not all things work everywhere...but that's my ignorance in thinking that it should be so (and perhaps too much influence of Captain Picard---Make It So!) In any event, I think the most helpful solution is to see a checklist chart of what works without exception on which platform, so we know what we're buying or expecting, realizing that everything will never work everywhere. I am reminded of sage advice from long ago, when there were Apples, Amigas, IBMPC, Commodore and TI machines to be had -- choose your application, then buy the hardware that runs it. This conversation is--for me--the single most specific recommendation for buying Mac that I've ever seen. Thanks to all who contributed, and slogged their way through it.