Gammajo, The problem with SACDS is the low number of them available. Before investing in an SACD player I'd check out Acoustic Sounds, Music Direct and ebay to see if there are enough that you want available to make the cost of an SACD player worthwhile. If you like Classical music there are plenty available, but other genres, not too many. There are a lot of Japanese SHM SACDs being released, but they're very expensive.
You may be better off getting a server and dac that can accommodate all the hi-res formats. There are many more downloads available in multiple formats than SACDs.
You'll probably want streaming capabilities in your system too. It's not clear yet whether downloads or streaming will eventually be the format of choice. Downloads are pretty expensive and streaming is pretty cheap, at least for the time being. CD quality is the best quality available in streaming at present, I believe.
