I am buying a demo unit DSPre from my local dealer. I am very excited, because I plan to build out an all ARC system eventually. I can't afford it all at once, but the plan is to use the DSPre with a Ref75, and then eventually replace the pre with a Ref5SE or whatever the latest is in a year or so. The biggest hurdle I will have in the short term is that I'm losing my phono preamp that was built into my C2300. And then I would need to get another dac if I buy the Ref5SE.
But I'm convinced that there's a lot of magic in an all ARC stack paired with Wilson speakers.