Benefit of a Newer (Used) DAC - "Bang for the Buck?"

I own a Topping and it is quiet, high clarity very dynamic, no rolloff.  I paid 630 for it with price match and 2 year warranty.  Apos Audio has several brands.  30 day return policy.  Schiit is another company.  Starting at less than $200.  Their units come delta sigma or R2R.  So in short lots of new and used for your choice.  If I changed brands, I might be inclined to try one with tubes such as the Tubador.  This would pair well with your speakers.  PS.  I too have horn speakers. 

MHDT even the lower cost models will raise your SQ. These are Tube, R2R

@cal3713 I saw your ad for the Holo May but it sold before I could reach out. So if you could only pick one would it be that or the AM?
-Alex

@rareace I think it's going to come down to personal preference (and system/ears) as both dacs are outstanding in their own way.  

I kept the Audio Mirror T3-SE because it provides the most real, natural, 3-dimensional sounding image I've heard in my system.  

The May, however, produces the most accurate and extended frequency response I've heard in the system.  It's really striking how it seems to perfectly reproduce every single piece of the spectrum.  It also produced the largest soundstage, both in width and height.  It was super clean and detailed, without sounding digital or harsh.  There was a touch of brightness, but I do believe that would have gone away if I'd been able to put more than 200 hours on it before being forced to pack up my stereo to prepare for a move. If I were more concerned about accuracy and/or details, the May definitely would be the winner.  It's a great dac.  Wish I'd been able to fully complete the break in process.

@cal3713 Sounds like you kept the more emotionally engaging DAC. I recently tried the Mojo Mystique EVO and it was phenomenal. As you put it technically the better DAC. But I feel that my Border Patrol was slightly more "musical". Just made me stop analyzing and just listen...
-Alex