Here's my take:
I had the Calyx DAC 24/192, which is a single ES9018 version of the Femto, without the better power supply the Femto looks to have built-in. Using better power and my Audiophilleo 1/PP I managed to get the Calyx DAC up to the level of my Reference 7.1, but sounding a bit livlier. If I fed it with the new USB32-based Digital Interface, the sound changed a little and they were fairly indistinguishable. The Master 7 is better still, but in being seemingly able to do everything at once -- that is, being detailed, engaging and organic. So if the Femto does more or less what the DAC 24/192 did after I add all my improvements, then great, but it is expensive.
I spent some time with the Invicta at a meet and it was a bit too technically-perfect-sounding for me, like the Anedio I'm using at the moment.