Lexicon DC-1 or Theta Casa Nova

I am currently using a Lexicon DC-1 with 24 BIT DACs in my system and for HT this is excellent, my problem is in the 2 channel audio mode. I do not feel like the Lexicon does a very good job in this area. I am considering the Theta Casa Nova to replace the Lexicon, possibly the Casablanca if I can find used/reasonable$. Has anyone A/B'd these 2, Lexicon/Theta, I am trying to figure out if going to Theta will improve my 2 channel listening. Thanks in advance.
I recently auditioned the Lexicon MC-1 and the Casa Nova. Even though the MC-1 is far better than the DC-1 the Casa Nova was significantly superior for two channel. That said, I then tried out an EAD Ovation, of which I am now a proud owner. Nuf said.
What I find totally amazing is the Lexicon loyalty. Go to the SMR message board for some awesome battles. I jist speak from experience, as it all depends on one's own listening. I think there's some good suggestions here. I think Dan just overwhelms with facetiousness, but I would never do that ;) The Classe suggestion is interesting. I've only auditioned the ssp50; it's replaced by the 75, which I've not heard. McIntosh amplification... hehehehehehehe.
The Classe units are great for stereo and the ssp-25 is a great buy. I got mine for $1750 used.
SFBAYDUDE: I've been following this thread as a DC-1 owner, and was interested in your comments about the SMR message board. Please provide a bit of detail about what this is and where it is. I agree with some of the comments about there being better two channel options (even those which include HT capabilities). However, at the price you can get loaded, used 24 bit DC-1's for these days, they're tough to beat for HT applications, and the two channel listening isn't all that off the mark (although I agree with the comments about the MC-1 being quieter and smoother, and the Casablanca doing pure 2 channel audio better--not so sure about the EAD or Casanova, based on what I've heard.) Thanks for your response. Jeff