I'd say SACD definitely has a leg up on DVD-A right now, largely because of the hybrid disks (like the Stones remasters) that are being sold as regular CDs to unsuspecting non-audiophiles. As manufacturing capacity increases, we'll see more of these, including (eventually) new releases.
But even if we get to the day when all disks are SACD hybrids, most people will probably listen to the CD layer, at least most of the time, simply because they'll be listening on a blaster or phones that are only 2-channel.
I agree with most of Thsalmon's points, although I would note that bad multichannel mixes are not unique to DVD-A. As we get more multichannel SACDs, especially from non-audiophile labels, I'm sure we'll see plenty of incompetent mastering jobs. Over time, as recording engineers get better at it, there will probably be some improvement.
But even if we get to the day when all disks are SACD hybrids, most people will probably listen to the CD layer, at least most of the time, simply because they'll be listening on a blaster or phones that are only 2-channel.
I agree with most of Thsalmon's points, although I would note that bad multichannel mixes are not unique to DVD-A. As we get more multichannel SACDs, especially from non-audiophile labels, I'm sure we'll see plenty of incompetent mastering jobs. Over time, as recording engineers get better at it, there will probably be some improvement.