I take issue with "It was the very reliability of it — in user-friendly design, as well as stability of functionality — that was the basis of my choice in the first place..." With some Apple products this was true, with others, not so much. iTunes is one example. To me, iTunes has always been a mess. In the old days it would reliably update my iPod with new songs purchased from iTunes, but that was about it and the usability was always terrible.