I had several, and also the MZ-RH1, the last of a generation. Boy was that thing pretty, with its spectrum visualization. But it couldn't compete against unlimited streamable music from Google Music or your own storage streaming (airsonic). It just was a different generation, and the badly needed changes arrived too little too late. Very much Sony way of doing things.
Yes, Sony were way too arrogant back then.
They are better (but still not perfect) today though.. At least they have adopted Micro-SD for storage and play nicely with FLAC, MP3 etc
My Sony TV is slightly picky in the video formats it wants to play, but I can live with it..