digital combos, help, EMM labs, MBL, Weiss, Metron

Don't forget Theat Digital Gen8 DAC. They just upgraded it to a series II. Something to look at.

Including gear from dCS your list is very good try to audition and if you go for combos stay in the same brand.
Although I had good experience from Esoteric transports and dCS dacs, but for example Weiss is a lot better with it's own transport than not.

Mostly you should thinking matching with the rest of your system.

Weiss is a lot better with it's own transport than not

This is a good, if expensive, option. By the way, "Weiss is better with ITS transport"; it's= it is

I would also audition the Metronome etc, first. The sound from these two differs distinctly, so a good place to start.

Presumably, you are bound to choose among the systems you list? Or is there choice beyond that (Zanden, for example)?