I owned an ran km184s and km140s for several years, and have since owned Milab vm44-links for several more years. I don't own the Beyer mc930/ck930, but do own the Beyer mc950 hypers.
I think the Milabs and Neumanns are somewhat/fairly comparable in sound, and of the two I much prefer the Milabs. The Neumanns to me don't have the definition in the low end compared to the Milabs. Though I agree the Milabs might be a tiny bit more bright than the Neumanns, it somewhat balances out in the overall sound as the Milabs have a fuller, tauter bass, so while they might be a bit more bright, they certainly don't sound thinner.
The Beyers are a whole different sound, darker as Page says. Smoother than the Milabs & Neumanns, but less detailed. I enjoy having both available to use (though different patterns), but I think choosing between the Milabs and Beyers is a matter of personal preference and/or your specific application.