Denon DVD-2910 w/DAC

Is there a DAC in the $5-700 range that will allow HDCD, SACD, and DVDA?

After a relatively short search it seems if I want good sound with all the above formats AND the ability for picture I have to spend over $3000.
Short answer is no; SACD uses a very different data stream from redbook, as does DVD (I think). If you have a 2910, why not have it modified by Exemplar or TRL or APL or Underwood? Pretty darn good units, IMO.