New R2R DAC

I’m in similar situation with a Dennafrips Ter 12th Ann.  I was at a shootout this weekend and the Holo (2 chassis) was the consensus winner.  Can't speak to the others on your list.  I agree with staying in the r2r realm.

@gareents 

The Amber 4 is not an R2R dac but rather delta sigma. Not sure of what price range you’re trying to stay within but I would recommend trying an Aqua La Scala Optologic MKII. I’ve recently seen sales on the used market around $4.5K. I’ve owned one for a few years now and it fits well with my ARC gear. 
I also own a Lampizator but had to go with a golden Atlantic 3 TRP to best the Aqua. The Aqua combined with NOS driver tubes will take you to another level.

I would definitely would recommend giving the Audio Note DAC2.1x Signature a try ,if you are able. 

I have the TotalDac D1 and love it. I also have the audio note 4.1x i prefer TotalDac. If you have looked at SW1X dac i think they share same design technology as Audio Note

I have the TotalDac D1 and love it. I also have the audio note 4.1x i prefer TotalDac. If you have looked at SW1X dac i think they share same design technology as Audio Note