CD player ungradeitis; Sony SCDxa5400es


Hello. I currently have a Sony SCD333 Cd player in my system & as much as I love it, I suppose I could do better.
It never ceases to amaze me for such a standard grade machine. I see Sony has a new SCDxa5400es version out. What is your take on upgrading to the newer version? I really like the fact that it has balanced connections and takes multi disks which if/when I upgrade are my only basic requirements besides the black color. Anyone bought the XA5400 and have input on it? I am not expecting the "new miricle machine", but ...?
System; Krell FPB300cx amp, Krell KCT pre, Infinity Rennaisaince 90 speakers.
Thanks for any and all insight, John
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I owned a 333ES years ago that I ended up getting modded by Richard Kern. Sometime after that I acquired a XA9000ES which was better on both redbook and SACD. From the little I have read on the new XA5400ES and based on my experience with my 333ES I don't think you'll be wasting your money upgrading. The only thing you will lose is the 5 disc capability, everything else will be a gain IMHO...
I thought the XA5400 looked like a single disc player, but ont of the reviews I saw on line stated it was a multi disk. I figured perhaps they changed the loading mechanism to a car type where the disks shuffle around inside the unit. I'll have to look further into that.
Review link stating 5-disk;
http://www.product-reviews.net/2008/09/05/sony-scd-xa5400es-sacd-player-showcased-at-cedia/
I made the same error in reporting that it was a multidisc player but it is not. The display card at CEDIA was printed in error saying that it was.

I have one now and it is a single disc player.

Kal