One issue to consider with the MF M1, is that JA's measurements in Stereophile show that it's output is limited to about 50 KHz, which means its 192 KHz digital may not deliver much different output that its 96 KHz input. I think that is still true with the latest version. Honestly I have not idea what this really means in the final sound, but it is something to consider if you want a 192 KHz input. This is something to consider in any mid-level DACs. I do not know how the other DACs you mention measure up in this regard. However, it is something that has made me look beyond the M1. That said, I have an older MF DAC that I really like.