Do remember to check the manuals for any and all home audio and video players within your home for supported formats, in case you have something that is capable already.
Out of curiosity, why SACD?
If you are planning to get SACD content only to put them in some portable media player, I would suggest you either skip the SACDs or get the regular CD versions instead - many portable media players don't have audio output that does SACD justice, and well, no surround.
I'm thinking about getting an ipod gen 5.5, and some people the sound chip is better than later versions, while others disagree. I think the ipod does surround well, but I don't know for sure. Also my Pink Floyd SACD rips are FLAC, which normally the ipod doesn't play but there's this program called Rockbox that'll allow me to play them. I want SACDs since most of my favorite albums (Dark Side of The Moon, Tommy, Close to the Edge, etc.) are well remastered for SACD.