Get a Sony 595 as mentioned above with the TRL mods. They do come up used. I have a Sony 900s with the TRL mods and it runs all over the 5400 IMHO.. The Oppo 95 is also a better choice. I had the 5400 and it is OK, not great.
I suggest "do not go to computer audio yet" and get a CD player :-)
Computer Audio does not sound as good as a great CD player based on my recent experience - at least not yet. Also, it has so many twists, turns, changes, updates etc.. that I would give it more time to mature a bit.
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