I suspect a MultiBit Modi will outperform a non-MultiBit BiFrost. The MultiBit upgrade to my BiFrost was that big (and really was the first time I could listen to digital music; I am now completely digital).
I have read elsewhere that the sound difference between a Modi and BiFrost is negligible. What you are paying for is upgradability. So you want to make sure the used BiFrost has the Gen 5 USB board in it. But even that is problematic, as there is a new USB board coming at some point, as Schiit has purchased the rights to make their own USB chipsets, and it sounds way better (if I understand this right). They talk about it in this interview (sorry I don't know the time stamp).
https://www.youtube.com/watch?v=IUBFtqNpC7U
So I would be going to a Modi 2 MultiBit or Modi 3 MultiBit (are the new ones Modi 3 MultiBit? The website doesn't say they are), in your position.
-docknow
I have read elsewhere that the sound difference between a Modi and BiFrost is negligible. What you are paying for is upgradability. So you want to make sure the used BiFrost has the Gen 5 USB board in it. But even that is problematic, as there is a new USB board coming at some point, as Schiit has purchased the rights to make their own USB chipsets, and it sounds way better (if I understand this right). They talk about it in this interview (sorry I don't know the time stamp).
https://www.youtube.com/watch?v=IUBFtqNpC7U
So I would be going to a Modi 2 MultiBit or Modi 3 MultiBit (are the new ones Modi 3 MultiBit? The website doesn't say they are), in your position.
-docknow