I have compared the Bricasti M3 and the Weiss. In fact, I have both here right now.
Both are great but very different. There is obviously a big difference in price. The Weiss is more competitive with the M1 than the M3. I have tested a bunch of DACs in another thread and what you are really looking at with DACs is a compromise between detail and soundstage. The M3 is soundstage king in its price class but not be all end all in terms of detail. Weiss is in a different price class.
the M3 is not the most detailed DAC but has a gigantic soundstage. Dead neutral in terms of tonal profile and very musical and engaging. The network card/renderer is far better than you would assume for $1000 upgrade. I have recently had a few folks test this vs some very high end player/server combos and it is competitive with some shockingly expensive gear.
The Weiss is incredibly detailed yet still has a wide and deep soundstage. Without filter/dsp, it is a hair forward of neutral. The player/renderer is every bit as good as the M5 if not better and had a silly amount of features that allow you to fine tune your sound. The Weiss is definitely the better of the two DACs but it is also ~$3k more. The M1 SE would be a much fairer comparison and there itbis a small trade between soundstage and detail.
i can’t speak about the others though I am in process of evaluating Meitner and will be listening to the MA3 soon.
based on your system, I would also look at the Chord TT2 and the Rockna Wavedream Edition as potentially brilliant matches.