@jfmerk - do you have a local area group of audio folks (AES?) near you, maybe someone [nice] in the group will let you demo their R2R dac?.
Having tried a few different lower to mid-priced r2r dacs with different technologies, and a well praised non-r2r dac, uh... what I started with and ended up with was quite different from what I originally thought I might do. There seems to be a lot of hype with dacs, imo. Unless someone with some experience and decent ears hears your system [in your room, speakers, cables, setup] and has a good idea of which direction you want to go, [after you demo multiple dacs] you might land a little closer to where you want to be. Its a big guess otherwise. I think most of what we do here is trial and error, and learning best we can from others as we go. Reading posts and doing real demos is a completely different thing to consider. This can be expensive and might take a while to hit the target IF you just buy/resale later, and don’t demo stuff. Try to get a few loaners or a dealer loan/buy/returns if you want to save some time and $. A great dealer or retailer with a solid return policy can help a lot. Best of luck.