I'd add the Metrum Onyx to your list maybe for a different option. It's an R2R NOS DAC (I believe the others you're looking at are upsampling DACs), which some consider to have a very natural and organic sound. It trickles down a good bit of technology from the much more expensive Pavane and reportedly captures a lot of that model's performance capabilities, and price wise it slots right between the Brooklyn DAC and Supremo. It's relatively new so if you don't see any reviews I know there are some on the Jade, which is the same DAC but offers preamp capabilities as well.
Also, if I were you, very high on my priority list (maybe even higher than a DAC) would be a preamp upgrade as the RLD-1 in stock form will hinder the capabilities of your excellent amp -- but I'm sure you probably know this. I had the RLD-1 in my sysrem on demo paired with my DNA-0.5 Rev. A, and in stock form I found the RLD to lack the transparency and detail to run with Steve's upgraded amps. It's not a bad preamp at all, but like Steve's amps they are initially designed to a price point, and I believe he has upgrades for the RLD-1 that may well be worth looking into. Although I confess I'm planning on pairing my DNA with a nice tubed preamp in the future. Anyway, FWIW and best of luck with the DAC.
Also, if I were you, very high on my priority list (maybe even higher than a DAC) would be a preamp upgrade as the RLD-1 in stock form will hinder the capabilities of your excellent amp -- but I'm sure you probably know this. I had the RLD-1 in my sysrem on demo paired with my DNA-0.5 Rev. A, and in stock form I found the RLD to lack the transparency and detail to run with Steve's upgraded amps. It's not a bad preamp at all, but like Steve's amps they are initially designed to a price point, and I believe he has upgrades for the RLD-1 that may well be worth looking into. Although I confess I'm planning on pairing my DNA with a nice tubed preamp in the future. Anyway, FWIW and best of luck with the DAC.