I had both the Invicta and Mytek at the same time. The Invicta had better detail, soundstaging, blacker background, better build quality, and more features (HDMI out, balanced headphone drive, SD for internal storage.) The Invicta doesn't cost-cut - from being made in Canada from top to bottom (very nice casework I might add) to a linear power supply with galvanic isolation to top-flight chips. People who won't spend 4K on a DAC, well I don't see why this would change their mind. The Mytek does have a lot of features for the price.
The 9018 chip is notoriously hard to work with - just ask Schiit (or don't) why they don't use it and won't even in their statement line. It makes sense that the guy who developed the thing can wring the most out of it.