[DAWgEAR]

I've used the Kiwi, Cactus, Blueberry, Dragonfly, and Baby.

For vocals, I love the Kiwi. Excluding the Big Bottle which I have no experience with, I think it is the best value among the Blue mics. It is a very nice sounding mic. Slightly scooped in the mids with quite a bit of low and high end. The low mids, however are not super thick. It is definitely a bright mic, but the presence bump is subtle.

The Cactus is full bodied enough and silky smooth, but darkish. It excels on acoustic guitar in Omni, but I haven't liked it better than other mics on much else.

When you say "lots of warmth, depth and dimension, silky highs, etc", the Cactus does come to mind. But it is a mic with a strong personality that you might really like or really dislike on a particular singer. Definitely try before you buy.

Someone compared the Cactus to a U87 ... to me they are like apples and oranges. Maybe a U47? The Kiwi could possibly substitute for a U87, but in some ways it is opposite to the U87: the 87 has more solid mids and less down below and up top. The Kiwi, as I mentioned is thinner in the mids, with more extension down below and up top. More transparency and less punch than an 87.

For some reason, the Baby Bottle on vocals reminds me of Natalie Merchant.