I would sell anything I no longer had any use for.
Comparing CD vs SACD/DVD-A and DVD vs Hi Def DVD does not compute. The average consumer does not have a system capable of revealing the differences in the audio formats, doesn't even know they exist, and doesn't care if they do know. On the other hand most people have heard of high definition TV and can easily tell the difference. I haven't seen either one but if hi def DVD is as good as hi def TV then they are more than "slightly better" than today's DVD. On a large screen hi def TV blows away a regular broadcast and a regular broadcast is better than a DVD. Once the players are reasonably priced they will eventually replace today's DVD.
Comparing CD vs SACD/DVD-A and DVD vs Hi Def DVD does not compute. The average consumer does not have a system capable of revealing the differences in the audio formats, doesn't even know they exist, and doesn't care if they do know. On the other hand most people have heard of high definition TV and can easily tell the difference. I haven't seen either one but if hi def DVD is as good as hi def TV then they are more than "slightly better" than today's DVD. On a large screen hi def TV blows away a regular broadcast and a regular broadcast is better than a DVD. Once the players are reasonably priced they will eventually replace today's DVD.