Oppo DV-983H - $420 brand new. I'm selling one for $375 shipped (contact offlist if interested). Or wait for Oppo's new BluRay Universal for $499 - $599.
If you really don't care about picture quality or video features, then buy a $50 cheapo DVD player from some budget store and put the bulk of your money into a CD player. You'll get better quality audio than with a universal player at your price point. If you have to have one box, something like OPPO or Denon, as the other posters suggested, would be a good place to look.
I used to have the Pioneer Elite DV-46 then I upgraded to Elite DV-79. The DV-79 is much better build and less engine noise. Picture and sound were very slightly some what better in both DVD and 2-ch mode. For $200 at Tweeter, the DV-46 is a best bang for buck for entry level.
Anyways, I once auditioned two Arcam DVD models so I know what you are talking about its "warm" sound. The Arcam produce a very full, thick, and warm dialog that Denon and alike can not match. The one brand that has very close character and much more details; more movie like is the Burmester DVD.
I'm against Nordost and Krell but in your case, if you're looking for a bit more details and broader upper end, I highly recoomend the Nordost Blue Heaven interconnect cable and its speaker cable. There are about $150-$200-ish, USED.