Korby Microphones
In case you have never heard of them, Korby is the manufacturer of some mega high end microphones. Due to the secretness of their designs, we were asked not to take pictures. In fact, by merely mentioning that I've infiltrated the Korby facility, I may be putting my life on the line. Ok seriously, they are making microphones...not nuclear weapons. There is no secretness. I just can't find the damn pictures.
The people are Korby were extremely nice and helpful. We got quite a tour of their machine shop where this cool, biker type due was showing us how to create things out of metal. I've never scene such a combination of manliness and brains combined in a craft. It was like smashing something with a hammer or ax with one hand and doing physics problems on the other hand. Pretty awesome!
The real kicker about Korby is they are one of a very very small number of organizations who build their own capsules. In fact, if you buy a microphone from them, you can send the mic back and they'll tweak it's frequency response for you. I don't know of any other microphone off the top of my head that can do such a thing.

Korby Convertible
Their flagship model is the Convertible. It allows you to swap out capsules to get sounds more like the U47, 67, 251, or C12. Basically, all the classic high end condenser mics. We asked Mrs. Korby how a microphone with the same electronics can sound like so many different mics. She said that they have so much control with the capsule that they can often compensate for different electronics. We tried out the convertible and it performed extremely well. I remember one of the capsules was a very close second as our vocal mic. (In no way did this mean the mic was a bad mic, it just meant that Wagener had a mic more idea for our vocalist in his arsenal). Either way, the convertible is not a cheap choice by any means, but if you plan on getting the top 5 condenser microphones, you could probably save a ton by picking up the Korby Convertible. I wouldn't mind having one in my studio that's for sure. And if I had the cash, I know I could get one mic that could handle all vocals very well for the price of less than 2 mega condenser microphones.
One other benefit with the Korby Convertible is it's reliability. You see, when you really deal with vintage microphones, reliability is often a problem. Consistency between models is another problem. With the Korby Convertible, you bypass the reliability issues and you pretty much know what you are getting sound wise. If you don't like the U47 capsules, just have them tweak it for you. No big deal!
Why am I giving Korby such an endorsement? Because they gave me a free tshirt!