midi clock can never be ‘perfect’ , all slaves will be slighly off and waver, and will take a short time to catch up to tempo changes… but we don’t need technically perfect, rather musically good enough.
you have your answer
personally, unless I found an ‘issue’, in this case, Id go for which ever feels like its most convenient
does the model 12 have 2 midi outputs?
if not then the pyramid seems to have a minor advantage, since you don’t have to use a midi thru, as you can connect to digitakt to A , and model 12 to B.
(I avoid using midi thru if possible, and only do 2 jumps at most)
generally , I choose based on:
a) which devices needs to be the most ‘accurate’ or needs instant tempo changes
(e.g. OT when modifying audio , needs tempo changes not to be slewed!)
b) which is convenient
if Im using a DAW usually, I’ll often make that master, just because thats where its handy to have control.
similarly, if Im mostly working on the OT, that will be master - and at other times I’ll switch to the Pyramid.
I’ll admit in my setup , pretty much however I configure it, its ‘close enough’ for my use…
( when working in a DAW, I resist the urge as much as possible to ‘pixel peek’ )
if syncronisation is really important to you, then you need to look at solutions that include delay compenstation. at the simplest (but not 100% accurate) you can use delay compensation in a daw.
to get total control you needs something like the E-RM multi-clock, which allows you to set delay compensation per output.
but again… perfection is not normally needed, and chasing it will cost you both time, money and probably quite a few grey hairs
btw: there are a ton of dicussions on this forum (and others) about use of midi clock, these might be interesting.