Hi Ddraudt,
What are your experience with multiple units.
I found adding them, until reaching 4 mc-0.5's the resolution, bass, dynamic, detail, focus drastically improved, thereafter, adding more starts changing the sound in a different direction - opening the sound and becomes more natural.
I seem to also like what i feel is the minimum, 3-4 units for me, adding more is nice as well but seems to change differently. I'll give it more burn in to evaluate further.
Is there an optimal amount to use? i'm not too sure by the comments that adding them infinitely leads to greater improvement each time, limited to cost alone?