I’d add the Musician Pegasus to your list as it does all the things you’re looking for very well. It comes from the same factory as the Pontus II and shares many of the same parts/technology, but the Pegasus seems to be a little more detailed up top than the Pontus (and probably a lot of other R2R DACs for that matter) that I thought might appeal to you given what you’re looking for. And at $1045 it’s considerably cheaper as well. Here’s a good review, and I own the Pegasus and think his assessment is spot on.
https://soundnews.net/sources/dacs/musician-audio-pegasus-r2r-dac-review/
I should also note you can get a significant performance boost by adding a DDC and utilizing the Pegasus’ i2S input. I bought a used Iris and was surprised and impressed with how much the sound improved (and this using a $6 HDMI cable from Monoprice). If it’s in the budget the benefits are such that I’d recommend getting the DDC right away, but if it’s not it’s definitely something to look forward to down the road. Musician offers the similar Pisces that is likewise cheaper than the Iris. Hope this helps, and best of luck.