"I have seen told that the SACD capability of the Sony will enhance the sound quality of standard "red book" CDs This has to be a plus factor for the Sony Thanks, Jim "
That's not true. I don't know who told you that but SACD compatibility has nothing to do with redbook sound quality.
I also had a 9000ES. I bought it to try SACD. If you have other sources, the Sony may be a problem. When I had it in my system, it used to make all of my other components sound bad. I haven't heard the 5400, but there has to be a chance the same thing will happen. I would consider other brands and not just Sony.
That's not true. I don't know who told you that but SACD compatibility has nothing to do with redbook sound quality.
I also had a 9000ES. I bought it to try SACD. If you have other sources, the Sony may be a problem. When I had it in my system, it used to make all of my other components sound bad. I haven't heard the 5400, but there has to be a chance the same thing will happen. I would consider other brands and not just Sony.