There are R2R DACs out there that cost few hundred dollars that don’t even come close in sound quality to high end well implemented Delta Sigma designs.
Don’t you generalize, of course there are, I’m not talking about the cheap R2R junk, that’s when the Delta Sigma’s are the better offerings. But when it’s comes down to the R2R talked about, DS is then a bit of a yawn to listen to in comparison.