I have a lot of experience with many of these. I think you are better off to keep the Touch and just improve the jitter from it. Buying a combination product usually involves compromises, particularly to what counts most, the jitter.
The jitter of the SB Touch can be reduced by adding:
Dynamo power supply
BNC-BNC cable with RCA adapters
This combo is $1548.00, all with 30-day money-back less shipping.
What is important here is to know that the jitter is the #1 issue with digital, so don't take a step backwards in this regard. Put your money where it makes the biggest difference, and that is not the DAC. After you have this reclocking solution it does not matter whether your source is a Touch, Sonos or a $50 DVD player from Walmart. They will all sound great.
The DAC is certainly important too, but it is much more expensive to get a significant increase in performance here compared to lowering the source jitter.