@backdoor If your decision was solely around the Yggdrasil, I'd suggest upgrading from it. There are many options that deliver what the Yggdrasil does well AND also give you more. In some cases, much more. For reference regarding what I just wrote, my preference coalesces around naturalism, realism, and emotional connectivity.
The DAC 8 is a 'different' choice. Analogous (though not entirely) to someone choosing 'vintage' components over modern ones. As others have pointed out, listening to it within the context of your system and goals is important.
My point being, were it me, I'd be comfortable upgrading from the Yggdrasil without an in home audition TO: current well reviewed / owner feedback DACs. However, if the choice was the DAC 8, I would want it in my system first...before making a decision.
FWIW, despite the Yggdrasil being the 'superior' DAC, it is the ARC DAC 7 that remains memorable and special.