You also need to consider break-in. I had the same dilemma with the Schitt Yggi+ LIM DAC that I got converted to MIB. Should I sell it immediately in the unopened box or listen. I was going to buy a second used Schitt Yggi+ OG to replace the MB.
I opened the box and found it sounded not too good. That was expected with the Yggi+ DACs which I found need about a month of hard burn-in. The MIB sounds very good now, not as good as the OG though.
Yesterday, I signed up for the new uber Schitt DAC, called the Byggi for August availability. My MIB will be converted to the Byggi. Keeping the brilliant OG as is.