I wonder which format will emerge the winner, sacd or dvd-a.
No winners here, only losers. Not the formats themselves, but the marketing essentially killed the war.
The good news is you can find more and more SACD's and DVD-A's for sale cheap on Ebay, AudiogoN, etc. The bad news is that what you see is what you get. The major labels haved stopped supporting these formats, and stores like Best Buys have stopped carrying them.
It's what happens when you have a format war and no one comes. :-)
Don't worry, I'm sure with the advent of HD-DVD and Blu-ray technology, a new hi-rez format for music is just around the corner. Unless you have a boatload of SACD/DVD-A software, I'd just stick with your Opus 21 for now, and wait for the next format war. This one is over.