Regarding the 3 Zigma CHI mics, I have a complete set of them - pairs of eight different capsules, 6 transformerless mic amp bodies, etc. They are quite nice. The SD capsules (card, HCard, diffuse omni and free field omni) are pleasing sonically and have predictable behavior. Noise is acceptable with the SDs. The 4 different LDs (modeled after a 47, 67, C12 and 251) are quiet as a mouse and provide some interesting stereo instrument recordings, although they are primarily designed for vocals.
To go into a bit more detail with one capsule, the 3 Zigma CHI small diaphragm cardioid capsule sounds somewhere between a Schoeps CMC64 and a Neumann KM84, if that makes any sense. It is not strident like a KM184. It is more akin to a Joly modified Oktava MC-012.