Yes you should go ahead -the DS "senior" is a great DAC indeed and the possibility of continually upgrading makes it all the more worthwile. Give Ivan a ring and pull the trigger
For me it's gonna take a few more days since Torres is yet to be released for the DS Junior. I've learned a lot about myself in the sense that I didn't know I had such high a patience threshold haha. It sure will be a major tweak / improvement in the end.