DAC suggestions for a reasonably modest system

SMSL is a Chinese brand.  The SU-9n was a step up from either of my Schiit Modi DACs (one a multibit, the other a 3E.  At the time I was DAC buying I needed a remote volume, and the SMSL had that feature.  Yes, I'm definitely looking at used DACs that haven't aged out technologically.  I had an Emotiva SDA-2 before and the Modis were a step up.  

Thanks for all the responses so far!  You've definitely expanded my field of consideration.   

More excellent choices.  Really appreciate all the input.  I had a friend's Ares II at the house for a few weeks.  It was nearly new, so not quite broken in.  I liked it but at the time I could not consistently choose it over the other DAC in my system at the time (can't recall if I still had the Modi or SMSL then), where I was able to pick the SMSL DAC out over the Modi consistently in an A/B comparison.  Since then he bought a Venus II and yes, I could tell a difference on his system without an A/B comparison, mainly with the soundstage.  Regardless, the Venus is out of budget.  

Appreciate all the input!  Now to see what comes along in the local market (Atlanta area).

To wrap up, a few names I wasn't as familiar with, so that's very helpful as I narrow the choices.  Seems like the Pontus is the budget stretch choice, the Yggy right behind it, and a host of good choices from there right down to pocket change levels.  I have a Modi 3E and an older Modi 2 Multibit that were both bested by the SMSL.  Before I bought the SMSL a friend loaned me his recently purchased Ares II to "burn in" while he was on a long trip.  Even with a few hundred hours on the clock I really couldn't hear much of a difference vs the Schitts, if at all.  That led me to thinking a chip DAC was likely a better choice for at least the Altec system to add a bit of top end where needed.   Thanks again all, you've been most helpful.

@jji666 

I had considered using the XLR outs with an adapter, but the balanced output voltage is twice that of the RCA, so I'd need to introduce some passive circuitry to attenuate.  And in the random bit of music studio work I've done, adapting XLR is a compromise at best. Given my choices in tube preamps, I don't see an XLR capable pre in my future plans, and the SMSL RCA output is already so hot that at full volume on the DAC both preamps are usually running around 9-10 o'clock.  That was also the case when I was using a Convergent SL-1.  And back to the original goal, both systems are very different and I'm not sure one DAC makes the most of each system's attributes.

@cundare2 

I was surprised not to see HFR until your post.  But they are streamer DACs, so perhaps that was the reason.  If you were to isolate the DAC portion only, aside from the comparison to the 103D, where would you position it in the spectrum of available DACs?  It does look like the 250RS puts a lot into the GUI and streaming function, so I'm wondering if the DAC gets short shrift like in the BS Node.