At this point I really wouldn't invest a bunch of money in an SACD player unless you already have a collection. It's an obsolete format and the few players still on the market cater to those with existing collections that they haven't yet transferred to multichannel FLAC. But if you must have one then I know some older models of the PS3 will play SACD. I'm not sure about the newer ones, and of course there are Oppo Blu-ray players.
What's likely to replace SACD and DVD-A are Blu-Ray, Blu-Ray Audio and
24bit FLAC. Keep in mind that it takes pretty good speakers and very good ears to hear the difference between a well recorded CD and higher quality formats. Hardware media players that support 24bit FLAC with gapless playback (gapless is almost a must for classical music) aren't very common yet but you can always use your PC and a free software player.