Buy it, listen to it, if you don't like it send it back.
I can only speak for the Sda2, but the Rme Adi fs 2 was also within reach at the time and I found it terrible so I sent it back.
It was too much complicated bells and whistles for me and nothing like mine in terms of sound.
The Sda 2 was much less complicated and more musical sounding than the Rme.
That made it easy for me in the end.
I've had it for 3 years now and have hardly looked at any dacs, but if I have, they're 2 classes above, but also in terms of price, of course, especially when it came to R2R dacs.
I would also say it depends a bit on the rest of your setup that the Dac fits in as well as the rest.
That's where I would put the focus and what your requirements are.