DAC Question: Delta-Sigma vs R2R

I’ve the new SMSL VMV D2 in my setup, replacing my Benchmark Dac3 HGA, both delta sigma but with very different implementations of differing chip sets.  Both r really good music makers with enough features to keep the serious hobbiest happy.  Both can act as excellent preamps on their own, a real plus in a minimalist system, SMSLs 4499 implementation offers the opportunity to add a ddc with its I2S input and a clock frequency selection and input, so the new generation of disaggregated components at affordable prices can be utilized to squeeze out additional performance on an already sweetly voiced dac.  Good stuff.  The Dac3 remains a ‘stud’ offering up plenty of muscle if not quiet the refinement.  Benchmark stacks just sound right and the older ESS implementation still sounds terrific on cd quality material.  Like choosing vanilla or chocolate ya gotta get the fundamentals right for the longer term utilization and for me that means features and flexibility.  
I’ve also both Hestia and Athena Denafrips preamps in my rig cause there is more than one way to get class A body and tone into an audio rig.  So far, I wouldn’t change a thing…(-;